One problem I have with this game is that the other characters are all unnecessarily powerful, whilst Mario is just Mario. You could just buff up Mario to solve the problem, but then it wouldn't be Super Mario Bros. Crossover anymore in my opinion. Instead, it's the other characters that need balancing. Everybody's weapons can break blocks but Mario's. The only way Mario can break blocks is with his head, and that's only when he's Super Mario. But his fireballs just pop on the surface of a brick wall, while everybody else just shoot it, even if they couldn't in their original game. Speaking of which, several character's abilities has been ridiculously exaggerated. In Ninja Gaiden, Ryu can only climb walls if he has a ladder. Link could not downward thrust in The Legend of Zelda. Simon can only break one piece of wall at a time in Castlevania, and Mega Man needs a special weapon to do it. Same thing for SOPHIA, whose wall-climbing abilities Jay has also increased. Then of course, there is the ammo issues for Ryu and Simon, although Jay might fix those in the future without a prompt.