Once the 2-3x monthly Avengers is off his plate, how much does he really have left?
Manhattan Projects
East of West
God is Dead (from what I understand, Costa carries more of the workload than Hickman)
Secret (FAR from monthly)
SHIELD (as far as I know, there is 1 issue left, and it's already scripted)
So really, he's only got 2 full-on monthly books at the moment, plus whatever smaller Image projects he may do in the future (things like Feel Better Now, which seems like it'll never make it to us). I think that a smaller workload would definitely help, as Avengers has noticeably taken a hit at times due to all of his other projects, but there's definitely room for more.