Champion rank up

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For a huge amount of gold and/ or catalysts we should be able to rank up a champ from one star to the next e.g. 2 star to 3 star, 3 star to 4 star, 4 star to 5 star. You could have a limit of 5 for each to stop over use.

Gamer

No. We dont need a Marvel future figth coby game. Im like hav it is it also. Let you play more instand just to use gold and then Hey now im have a 5 Stars ultron. Then the cystal also be. Pointless from the game If you culd du this.