None of us expect BfA to be about the Vindicaar blasting battlefields from orbit, or about squadrons of Lightforged Warframes bypassing castle walls. The trailer for BfA suggests war on Azeroth will continue in more traditional fantasy mode. I can think of several plot devices Blizz can use to explain why this might happen. Which do you think they will use?
Poll incoming. I will of course fail to anticipate everyone's thoughts on the matter, so will include an option for "You left out...". Please tell us which obvious answer I stupidly left out in your comments (no offense taken).