in what way making player play the game more is bad game design?
especialy whe they complain that X job is never used and they have to play it?
unless you're doing ADL 7/7 "wasting" a run every few days XP farming with some friends/pug that also want augmented is not a big cut in your incomes (and imo is less boring than solo farming)

I'm not opposed to an unaugmented storage slip, I'd hapily use it if they change their mind but i don't think it's necessary