I really don't care about Axel's true name, I think he'll always be Axel to me. Although I gotta say, I know a lot of girls named Leah, so it'll take some getting used to haha.
The only thing I really care about is seeing him again in future games. I really hope we get to meet his somebody, not only in BBS, but KH3, if there is one
If they do show him, it'll most likely be for fanservice if anything. Unless they can actually make him pertinent to the story, like making use of the plans he and Saix were talking about.