If Disney is to maintain the pace of writing for the years post-OT, then I see no logical reason why they shouldn't include Vader's first years of hunting the Jedi. At 24 it sucks that only like a year ago I realized the timeline outside of the events of the original trilogy, it really strikes me as odd that no one outside of EU writers have bothered to fill the next gen of fans except years afterwards in annoying comics.
Vader's best feats like destroying that Cathedral, blitzing Roan fel, and killing 5 Jedi masters at once would be amazing if recreated.