Taking Ororo as an example, what story does Sai have to tell that will serve as a biography for the character?! What's the point in separating Betsy and Kwannon if they're going to bring them together as one in a game?! Wouldn't it have been better to have Betsy Braddock as Captain Britain and Kwannon as Psylocke, both with their independent stories and gameplay styles?!
They wouldn't even need to mention the body swap...
One would be treated as a long-time member of the X-Men, CB Prime, defender of the Multiverse and the other as a former Hand assassin, member of the X-Men and a Great Captain of Krakoa.
Giving Sai space in a game (something that attracts more fans to the comics), representing the "Psylocke brand" and giving her Betsy and Kwannon skins only adds more confusion to a story that has already been solved. We already have the characters, they just had to work with them...