As somebody who's played a bunch of Mundo Jungle (new resolve mastery)
This mastery update makes me sad. SotA is gone and Mundo can't use the shiny new tank mastery that they are adding in its place. Junglers don't really want Grasp because it doesn't do anything in the jungle and you can only use it in ganks that last longer than 4 seconds which isn't all the time.
Then they decided to remove oppressor which is one of the best offense masteries for Mundo and they're giving ADC's even MORE % damage boosts which is a problem for every single tank.
Plus the fact that like half the AP champions in the game build Morellonomocon as a first buy which means you get hit with Grievous Wounds in every single teamfight. Even level 6-7 teamfight at Dragon and they already have it. Its a joke, they don't even have to change their item purchase order to counter you.
I just think it sucks that they put this new fun toy at the end of the resolve tree, a tree that is already pretty lackluster and not every tank can even use it. 