Maybe instead of playing violas like they're big violins, we should play them like they're small cellos? Might be ergonomically better?
I used to play the viola da gamba (leg viola), which comes in all sizes but you play them kinda like little cellos. They have six strings, frets, and you hold the bow a little differently, but even the small ones are played with it tucked between your knees.
The modern viola is too small to resonate well in its note range, but it's a compromise we make to keep it looking like a violin.
[0]: https://en.wikipedia.org/wiki/Violin_octet [1]: https://www.youtube.com/watch?v=EVVh-kNmRcA
Or just have cellists play them, instead of violinists. It seems Yo Yo Ma has played one without much difficulty!