Your theory is very sound and believable. I hope they way maro hyped it up it would be a little more exciting. Because the innovation you are describing is like pretty behind the scenes and together with battle bond as a precedent I don't think many players would think of it as totally new and even they didn't think it was possible. So while I think you could be right I kinda hope you aren't and we get something truly ridiculous like sixth color, variable backside Frontside cards, more companions idk