Some of it is really we just got better. GU had issues with health pools too where multiplayer hunts weren't scaled by player so you'd get only 2.5x the health pool. Which means 4 players would still mow them down.

But in general, these games feel easy til expansion time or postgame.

This is one of the most thought out rework concepts I've seen, think it would take the character in a really cool direction.