When you offer "unlimited", you're immediately exposing yourself to the 0.1% of userbase that will absolutely treat it is unlimited. Whale users/hoarders. This has been a known problem since the dawn of hosting...hell, it goes back to times before computers.
One thing I miss for the other users, i.e. the casual users that never use anywhere near of their quota, is rollover. If you haven't used your quota this month, the unused will roll over to the next month.
One thing I miss for the other users, i.e. the casual users that never use anywhere near of their quota, is rollover. If you haven't used your quota this month, the unused will roll over to the next month.