Ah, no. Ms. Faust is an artist and producer, not an executive. Sure, she created some shows, but that doesn't automatically mean she knows how to run an entire network.Lauren Faust? She could also lead Cartoon Network Studios at the same time. (She did criticise the "girls graduate of animation" statement).
Also Lauren Faust running Cartoon Network Studios wouldn't mean that Cartoon Network would start airing My Little Pony: Friendship is Magic, if that's where this is headed. WBD doesn't own the show and they have no reason to acquire it since it's finished and not making any more new episodes.
MLP isn't coming to Cartoon Network. It just isn't.
Also, the Powers That Be at WBD have already had to eat crow about that "girls age out of animation" argle-bargle. They've announced Invincible Fight Girl and Craig McCracken's plans for a new Powerpuff Girls show, so now they're all like: