They can clear it if they have gear from previous ones but that isn't min ilvl is it. From scratch week 1 any team running both ninja and dancer at the same time at 90% had hard times clearing Titania. They wouldn't clear E2s without bringing 2 mnk/blm/drg because the loss difference of ninja itself causes you to miss enrage. So add the loss of all these to the high dps check.