When it works it's fine but sometimes the window store breaks and you basically have to reinstall Windows- in whole or in part- to get it running again. It also is designed to prevent modding and doesn't work with Steam Link for remote play even though normal non-steam games work with Steam Link just fine.
GloSC[1] will get you steam controller mapping / streaming for UWP apps (and more, but I've never had an issue ie adding UPlay games as non-steam games). Here's Minecraft Dungeons running on iOS via Steam Remote Play that I just recorded[2].
Also, Windows Store / GamePass doesn't stop modding, as Crusader King 3 proves.
Thanks. I tried to get a hardware Steam Link working with Gamepass games and failed, I either tried with that App or some other one I forget but ultimately I got it working by installing Moonlight on the Steam Link instead and essentially using it like a remote desktop.
I've read reports of Windows Store overwriting mod files, either this is a game by game problem or maybe it's solved. I do know a year or two ago the Window Store refused to open on a Windows PC of mine so it's a real problem and there's no way to easily reinstall the windows store if it occurs.
Whether Microsoft has solved these issues by now I don't know. I think I eventually got the windows store back with a Windows update.
