Noone cried about summoners being strong, dunno where you're getting this info from. The nerf was actually too quick, imo. People weren't given the time to develop counter strategies. Once a significant amount of time has passed and summoners still "reign" without competition, then, yes, go on and nerf them.
I also believe warcryers are sub-optimal, unless you wanna do something too specific. We'll see once we have fights without 20 sec delays ?