Yeah, Steam Input could have been huge for the entire gaming industry, but instead it’s only for Steam and so only can get fixed by Valve, who just doesn’t really care about coming back to things and keeping them working after initially building something. Frustrating to see something almost so good just kinda limp along, accumulating bugs no one will fix because Valve doesn’t really care beyond the simple button mapping use.
Just like how dynamic collections could have been pretty great, but Valve got a rudimentary version working, patted themselves on the back, and left forever without even implementing the most basic tools anyone would need to actually use them (boolean combinations, actually using the tags you set on games, etc). It could even have been a slick new interface to Steam’s tagging (imagine if you set a collection specifically as a tag, and Steam took your manually adding and removing games there as tag votes) that might’ve helped ease some of the dumb problems tags have (there’d be a lot more info for Steam to draw on than just the people actually updating tags on the store page).
I’m kind of impressed no one makes a better gaming social-launch client than Steam, but then Steam’s own client has a massive lock in advantage so you basically can’t make something that wholly replaces it, and Valve doesn’t care to play nice when they want that obvious Steam-game vs non-Steam-game divide.