I got there GS , PD ,Ghoulem , GF, DD . Should be any of them replaced with SK?
Might Required - 15K+
Boss - 11:30 ST
In-game name - Pauļuška
PD is essential hero in most modes, but at the point in game where you are at, you can do w/o him. Still, level him. Otherwise.... I guess GF comes out. Good hero, but I like SK more. Finally, some people think DD is past his prime. I don't agree, but SK can fill tank role as well as DD can.
And SK is a powerhouse, although you are not lacking in power. All the heroes you use are better than average.
Looking at your Team, You have kind of a great team already. You could try Swapping off PD for SK, if you want a All-Attack Team, Or with Grim, if you want to use PD's Proc to charge SK and GS.