Leave her in the game. No reason to remove a character based on his or her origin. It's like removing somebody just because their beliefs. The only important thing is: is she important to the game? If so leave her be. Same would apply to muslim, Christian or any other chars.
As a sentai fan, i think all you have packed already is enough. You could make standalone versions with other chars if you want to expand your universe later on.
Did Scorpion just do an ura nage in his oponents? Man, this version of Scorpion is better than the Scorpion from most MK games! So many possible combos!
Real nice looking project mate! I was wondering, as you said Jill is your fave, if you're going to add her Boss costume from 5, with the ponytail and blond hair. That would be awesome. Keep up the great work!