I really do like Excalibur, but that said if they try to dance around the whole thing of Shogo living as a human on a mutant island by, say, just having him stay in otherworld as a dragon, or if Jubilee decides "You'd be happier here than with me," then that'd be it.
It'd be a lazy cop out, for one, but pretty much proof that Krakoa isn't the tolerant, loving place it's being made out to be.