The problem is you cant just add devs to one thing and expect it being faster, kitchen and too many cooks etc etc... yes. BUT having a separate side team that does the 2nd ex dungeon, bonus trials like Hildy (with maybe 1 senior watching em) and side stuff or PVP maps etc would help surely - even the "braindead" adaptation of gear could be made by random devs as well.

You cant have too many cooks do one dish, but you can can have many cooks cook many dishes.