The main issue is with longevity, once they solve that, I am hopeful they will then this will dominate the Solar market completely and replace all the Silicon based single band gap panels. Even someone with relatively recent panels of 20-22% would benefit a lot from 35% panels, that is a lot of extra power in the same space.
Over the years I have used OSMC for my TV. I have never used it for streaming however always internal across the network streaming of my own content. It worked reasonably well for the most part although I have had issues with Samba in recent versions and have stopped using it. I can’t say much about its streaming, mostly for that you need a supported android or similar device rather than an open source one.