If they release with DLC it will be a new iteration.
yep, it'll be called Super Battride War or something like that and aside from the DLC characters already in, it will most likely have MORE DLC contents
so yeah, waiting for the DLC to be out as a regular content or for free is like a devil's circle, you're going to have to wait game after game after game until this series is discontinued and buy that last one instead
at least even without the DLC on that one you get your money's worth of all the previous game's content (possibly) rolled in to one, at the expense of NOT playing the game years and years before and only watching other people playing it
just look at Saint Seiya Chronicles, it's year after its release everywhere in the world, no such thing as a repackaging with built in-free DLC had been heard of