I'll put it this way- when i did act 6 completion, all node combinations on the bosses made me feel "oh god, im gonna die!". the nodes are meant to be difficult. putting destructive feedback, crit me with your best shot, aggression fury on a champ who can glance hits and nullify unstoppable, clearly puts the idea behind act 6. it was MEANT to be difficult.But act 7 was nothing like that. the nodes are not punishing even in the slightest compares to act 6. act 7 makes it feel like a game, and not like "why am i doing this..". act 7 is roster specific for sure, but there are a lot of options to one problem, so the need for a diverse roster is slightly lowered. but if you have planned out your rank ups to cater to the different interactions in game, act 7 will be three times easier than act 6.