Conquerors Blade is a horrible game with horrible mechanics. So I wouldn't support the idea of TW take some functionality from them. Like, literally, ANY functionality would be a waste of time in my opinion. I would say, a very bad choice of game for your suggestion.
Since your suggestion thread is extremely vague, I'm assuming that you only like having an upgradeable persistent character in that game. That, again wouldn't be good with what they have in mind as far as I can see. Mount&Blade was always more like CS:GO in Multiplayer sense. What happens in the round, stays in the round. Only the new XP system is now creating a new competitive logic. But this is for player himself, not for character. So I doubt TW will ever implement anything `persistent` into their game. Your best shot would wait for cRPG mod or Persistent Worlds mod.