I was thinking, since this game has a lack of metal gear characters ( in my opinion) it would be cool if The Big Boss was a character and he could have the following as costumes.
metal gear solid 3
solid snake (MGS1)
old snake (MGS4)
Not too sure about this. Sure she is possibly the best metal gear boss no boss in general I have ever played against, She doesn't a have a rich moveset, sure she has some awesome CQC and the B.A. patriot but what else? supers? air combos? no, I love The Boss but she doesn't have quite as much to pull from as the big boss, maybe a Boss skin for Big Boss, but otherwise i can't see this working.