I loathe Gunn being the head of DC films because it feels like such a gigantic waste for his peak, prime capabilities to be in charge of super hero films for the next decade or two. His films are so uniquely unruly yet heartfelt and while I've loved GotG, Suicide Squad and Peacemaker, I want the guy to be able to stretch his wings more.
At the very least he's an intelligent guy who should have the wherewithal to be able to command such a huge thing. Though I will say one of the things that struck me when they talked about the upcoming projects that would begin the new DCU involved multiple seemingly similar groups of lesser known, anti-hero, off-beat hero teams, alarm bells started ringing. GotG worked. Suicide Squad, while similar, worked. I don't know how many times you can use that same trope before it just wears on me.