It's been confirmed that Bran won't be in season five. They're taking a full season break from his story, and won't return to it until season six. So no heart tree magic in season five.

It wouldn't surprise me if they did just about everything from Books 4 and 5 that they intend to do in this season. In terms of tv-filmable scenes there's only so much to choose from, especially if they're cutting the Riverlands stories as has been rumored.

P.S. As for Quentin in Meereen, there's actually a pretty convincing theory that he didn't fail at all.