As stated above have a button that you could click inside of the subscribed items for a game would be wonderful. Me and a few of my friends I play with consistently use a lot of mods from the steam workshop. We play a lot of different games whether it be Warhammer 3, Stellaris, DOS2, etc. It can be incredibly frustrating to have to wait for the entire game to re-verify when its really 1 mod that is preventing us from being on the same version of the game, and thus preventing us from actually playing together.