Unfortunately, there’s noone who would respond to that. Everyone knows about ux problems yet noone knows how to approach them. Those who can help, usually do so with pull request – and even if not merged right away, they give base for future attempts.

Open source needs quality contributions to move further. However if one cannot solve any “good first issue” by themselves, tossing $5 into the donation bin allows devs to hire those who can solve those.

Once critical mass of contributions is achieved, you get wikipedia, vlc, blender etc: dominant players with no close proprietary rivals