I think we all agree that one of the best parts of X Wing is getting to have a part of our lives come full circle. We get to be adults, some of us, and still play with awesome Star Wars toys. With that in mind, when and where are we going to get two missing pieces of the puzzle? The Holy Grail the AT-AT, and the lesser but awesome Snow Speeder? Is Star Wars Rebellion the only hope? I don't see them fitting into the existing games because of the scale, and I don't think there is enough to warrant another game.
Pretty sure that Speeders would have an auxiliary arc though, not a 360 primary.