Tried to search for a way to do this but didn't really find anything.
Every wine game added manually will default to using its own prefix under / _gamehub/compat/wine_wine64 which is populated on launch. thus requiring a full configuration of a fresh prefix.
one must manually go to each game's settings to change that to /home//.wine if one is using a singular wine install (for example, to save over 1gig per instance)
in my case all my games function fine with a singular wine prefix so it'd be a large amount of wasted space and time to duplicate that 40+.

is there a way to just make gamehub select /home//.wine by default, or to bulk change it after adding the games to gamehub?
Can a menu option be added to settings to attain this behavior?