the gdrive bang should support multiple accounts, using the /u/(0|1|2|)/portion of the url. Maybe its triggered with gdrive1 or gdrive2? or gdrive for 0, gdrive1 ect? Not sure what would be the best way to implement it, but it would certainly be nice.
isaac I think it will be more efficient if you support Personalized Bangs. You probably don't have like 10 accounts, so I think adding a personalized bang for each account would be enough.
Browsing6853 your right, this can fall under personalized bangs.