DON'T do this. I don't see a point in changing a characters personality, mannerisms, or dialogue because of political correctness.
Barret was an awesome character and he added a certain charm to the gang. I would be pissed if this happened. Who cares if it's a stereotype. Better yet, don't change ANY of the characters personalities. Leave them the exact same. Add some dialogue for Yuffie and Vincent but that's it.
This is why I am afraid of a remake. They'll ruin the game doing things like that.