I think mozilla needs to clean/remake the add-ons store. Clean: delete add-ons with 0/1 users. Delete add-ons that are the same like translation add-ons there are many from and they all do the same stuff with the same code. delete outdated add-ons. Remake: developers need to say if the add-ons is mv2 or mv3. Give notification if they stop updating the add-ons.