I think you may be suffering from a mismatch between your expectations when you bought your Eigenharp and the basic reality of a musical instrument of this kind. This is by no means unusual but it is an interesting and common problem. It would be nice to solve this for people in the end, but I have my doubts as to whether or not it can truly ever be made to go away, however much effort might go into it. I also doubt if the effort to do so is really a worthwhile use of resources.
That sounds like a brutal assessment, but to understand how I came to that conclusion, consider for moment one of the easiest instruments to, as you put it, 'make a noise with', the piano. I learnt the piano as a child, as many of us did, and I certainly was making some sort of noise in a day or so. After seven years of weekly lessons though, and what must have amounted to many useless hours of practice I was still just about 'making a noise' - I could play some pieces, scales etc, but had not got anywhere near competence. It took the subsequent adventure of learning the guitar to make me a musician for real, and that journey involved at least three or four thousand hours of practice before I became fluent, and many since.
This need to get the practice hours in to properly understand and play even the simplest instrument well seems to be basic. I have yet to find an instrument that provides a good shortcut. Some promise to do so, some seem initially to have done so (home organ anyone? Garageband?) but in the end it's always the same - less then a thousand hours and you are basically nowhere. This points to the issue being a human one rather than one of technology, and I think this to be the case.
The Eigenharp, being a totally new instrument and designed from the ground up to be so, did make an attempt to tackle this. It was a stupid attempt and in hindsight I regret that we tried as it was a waste of resources, but like every musician on the planet, I'd like some of those thousands of hours of practice back, and the dream of reducing them was beguiling. That attempt was the standard factory setups, which if you are wanting an unconfigurable, 'does what ot does' type of instrument (ie, like most other instruments, the guitar, piano etc) were designed to make 'just playing' easy to do. And if you are happy to 'just play' then they do that. You still need a lot of practice, but the learning of the full instrument is reduced in difficulty, time and complexity considerably. It still does require a whole load of work though, there are no shortcuts to being a good player of any instrument in reality. I note that you think there is no way to 'just get playing;. There really is, just fire up the factory setup, watch and follow the tutorials and make noise. Every time someone complains about everything being complicated I always ask how much time they have spent actually doing that, and it is nearly always less than a few hours, sometimes less then a couple. I really don't know what to say at that point. What did you expect, to not have to do any practice? It's a completely new instrument, practice requirements are going to actually be greater than normal if you're already a musician, because it does things in new ways that you are not used to. Interestingly I have noticed that children seem to get on a whole lot better in the first twenty hours than adult musicians, which tends to confirm this. Adults, particularly existing musicians, basically just complain that it's not magic, that it's too confusing and 'why can't I just to X?'. Children just get on and learn to play, the complexity for them is just not there.
This difficulty that existing musicians experience is exacerbated considerably when they already have an idea of what they want the instrument to do. There is nothing wrong with having such an idea, but gaining enough command over an instrument to bend it properly to your will like that always involves more work and a deeper understanding. And many people don't wish to do the work. They want a checkbox that says 'make it like this' they can just tick. I guess this is a product of the 'million apps' modern world, but there are literally tens if not hundreds of thousands of of possible 'make it like this' checkboxes that you could have, it's a consequence of creativity. We can't do that. Your particular issue (wanting to detune the instrument) is an interesting case. It's actually possible (though very fiddly) to make scales at any kind of tuning you want, but you want a global 'detune knob'. We don't have one of those, and since you are only the second person ever to ask, out of thousands of players, we probably won't add one any time soon. So if you want to play with detuned scales then you're going to need to learn how to do that, which is going to take you a few tens of hours of work. If you wanted to do that with a Steinway (or worse, a Wurlitzer electric piano, tuned with a soldering iron and razor blade, the thought makes me shudder), do you think it would be any different? What makes you think it's easier here? The Eigenharp doesn't work like Garageband, not even slightly, so doing some things in software is much tougher while other things are much easier. It's just how it is. Your tuning desire is one of the tougher ones.
Just to be clear, you must consider that what seems like a technical process, 'configuring your Eigenharp', is, for a serious player, a part of rehearsal and performance as much as actually playing notes. This is an aspect of the instrument that is hard to learn because it is actually just hard, conceptually and knowledge hard, as well as being unfamiliar and new. Our tool to make that better, Workbench, has improved discoverability but it remains a hard thing to learn and will continue to do so because it is not possible in this universe to just inject understanding into peoples heads at a distance. They have to do some work. Think of it like learning music theory. Just for playing notes it's not relevant, and you can be an OK player without it, but for many things but you need it and to be good, you always need some.
The Eigenharp enables a whole lot of meta levels of playing (may of which are as yet unexplored and represent fascinating new musical territories) and adapting the playing environment to each piece to support this is also a part of playing the instrument at a higher level. You cannot learn this without extensive practice and if you do not wish to devote the time to that then I'm afraid there is no fix.
I apologise for this long and mildly ill mannered rant. I have personally really tired of this particular complaint, particularly as I feel it carries little validity. Learning something as complex, expressive and versatile at an Eigenharp is hard, and it turns out that the old, old tradeoff between ease of learning and expressivity was not suspended for us, or for you, however hard we tried to make it so. If you want a simple instrument that you can get to grips with easily and play without having to do much practice then you really should sell your Pico and buy something else. I'm not sure quite what would fulfill that need, maybe someone else here has a useful suggestion? Whatever you do, please don't leave it gathering dust in a box.
John
PS: I note that this post came about because you wanted a solo violin or viola AU. As far as I'm aware there isn't one that's worth the time of day, though I'd be happy to corrected on that. This is partly simply because MIDI is no good for that kind of thing, it's hard to shoehorn enough expression into an AU.
The 'Cello model in EigenD can make a decent viola sound, and I seem to remember that there is a convolution (impulse response) of a Viola body somewhere out there that works quite well with it. I'd love to have a good violin model working with EigenD but there are no good impulse responses available as far as I'm aware. Getting some nice Viol family impulses responses made is an ambition for Eigenlabs at some point in the future.