The Strike on the Moon, Summoning Pits, is the only thing that really needs to get nerfed. You know, the one with Phogoth. I was level 24 and two of my friends were 25 and 26 and it took us many many tries to beat the level 22 heroic. We are all pretty good players too, working together and coordinating our attacks. The sheer number of Major Wizards and Knights are just ridiculous especially considering how far apart the cover is and how hard Phogoth hits. Of course this is just my opinion and I may be missing something, but that strike was just damn frustrating.