If Mokuba becomes playable, I am hoping that he includes different types of dragons in his level-up rewards. I wish we could have Spear Dragon and Luster Dragon (not the tribute one).
I don't think we get Luster Dragon. A 1900 beater would kinda break the meta.. with kaiba's high peak (or whatever it's called) you would have a 2100 beater with no summoning costs.
I considered that as well, but it helps to confirm my suspicions now that you have mentioned it. Thank you. I don't even know if I have ever seen one four or lower star monster in this game. And I don't know if I even want to use the Cave Dragon from Kaiba's level-up rewards. Kaiba's high peak. Lol.