I think combos may have been intended more for solo.

In any case, I'm not too worried about hate distribution, because I'm sure they kept that in mind.

What I am concerned about is that this further restricts which skills people are going to use, and pigeonholes classes more and more towards a certain playstyle. Of course... it remains to be seen whether that is true. But when you can use a combo to do 3 weaponskills for the cost of one, i can't see much reason to use weaponskills from another class, unless you equip the entire chain, which likely wouldn't be worth the action cost.