it'll be a pretty amazing emulator monster machine, way better than hacking a switch and way faster than a hacked 3DS. Put supermodel and other retroarch emus on it (all have linux ports so should work great in SteamOS) and 200 gigs of ROMs and you can play shit for days. Plus civilization, diablo 2 remastered, ultima 1-5, wizardry, bards tale, and whatever else older game tickles your pickle. Is that better than a surface tablet though? dunno, about approaching similar prices
of course the day after I hacked my vita, 3ds, and wii u to load hundreds of games on each i never touched the things again
what'll be really fascinating is if someone figures out a way to run half life alyx on a Oculus Quest 2 hooked up to it