Just what we needed looks like is finally being developed by Sensel.com called the Sensel Morph https://the-sensel-morph-interaction-evolved.backerkit.com/hosted_preorders. But the first problem is that it is still on the expensive side with preorders now priced at $250 usd. But this is still a better price then that of any other competing product with these features. I expect it won't be long before others also move into this market and the price will drop. But in any case, new inexpensive touch sound musical instruments are not so far off into the future any more.