OR
Luke was right into being a proper Jedi straight after ROTJ. So absolutely no ****ing about with rebelgroupies/golddiggers. But the temptation was intense, and being a community minded sort of fellow so he relieved the tension by visiting a jizzbank in Coruscant under an assumed name.
Bob's...
Regardless of whether you'd describe it as a twist or not, there's just something about the mooted Luke-Rey thing that, given the tropes of the series, seems overly familiar and too obvious.
I reckon it won't be that is all I'm saying.
For me I'd prefer it if it wasn't even a twist at all. Better to be just someone who, for whatever mystical reason, is just packing bare force*.
*Yes, NSC. I did just use 'bare' in that context. Swivel.
Unless he knocked up some Sith groupie (maybe around ROTJ time when he was at the zenith of his power; think early 70's Jagger), but then Vader found out, and in a fit of jealousy stuck her and her unborn baby in carbon freeze. Then Palpatine and Vader die, leaving a mysterious, in utero Jedi...