I had thought of this as well, but one of the major benefits of Steam (access to all your purchased games) is lost if you can't play them due to resource constr

I had thought of this as well, but one of the major benefits of Steam (access to all your purchased games) is lost if you can't play them due to resource constraints (not enough storage on the usb stick for persistence, long load times for large games that need to be downloaded each time you boot). Might be a good idea for single titles, though.