Citadel bosses should have their own boss difficulty tree

The difficulty of those bosses is far higher than the difficulty of the average map boss.

This causes a problem where people are clearing t4 map bosses but struggle during the citadel boss because of that +4 difficulty increase.

I dont believe having to remove those points to do the citadel is good design so making a new boss tree specifically for citadel bosses would be a great option.