That's a good thought, Shanan!
Actually my Gf's name is Susan (MerriePoppins), and the "J/Kim" thing comes from last summer when we were all having fun with THE Kevin's observation that the DIS seemed/seems to have an abundance of "Kims." I and others had suggested we all just call ourselves Kim, or all wear nametags saying "Hi, My Name is KIM" on the cruise.
http://www.disboards.com/showthread.php?p=26134110#post26134110&highlight=kim
Given Jason's (Your DH's) love of Aaron McKie, maybe he could be J/Mc ("mick") or J/McKie (pronounced either like the player mih-KEE or like "Mickey,"

which ain't bad when taken in Disney context!!

)
Just a thought.

Jason's a heck of name as is!!