Roose would be epic. Also Robert's rebellion is in the works as a show or movie and same with Tales of Dunk and Egg
Where did you get that info? I know Martin at one point speculated that they could do Dunk & Egg as movies, but HBO hasn't indicated that they'd be up for that. And I haven't seen any info about Robert's Rebellion on any level except on fans' wishlists. I want it to be true, to be sure! But I'm pretty sure it's not happening.
At least not yet.
Maybe things will change a year from now.
(Here's a suggestion ... work in Roberts' Rebellion episodes into the actual show. That could eat up some time and several episodes and give Martin a bit more time that way. They haven't done flashbacks yet on the show, but I understand they're working some in this season. Just an idea!)