I really want to do something pairing Sailor Moon And Prince Diamond, I liked him way better than Mamoru, Mamoru was indecisive a lot and obnoxiously distant. Diamond on the other hand was up front and honest about his feelings and what he wanted, he even went so far as to shield Sailor Moon with his own body.
So here it is, I had two ideas for this pairing. Perhaps Diamond was brought back to life in the end by the Silver Crystal in reward for his redeeming himself when it mattered most, Mamoru took off with some uber high class college girl and left Usagi. Thankfully a handsome white prince will be there to pick up the pieces
The other idea is the traditional kidnapping, only it will be successful and Mamoru will decide he's had enough of saving her, thinking he could so much better in his arrogance.
(If it's obvious, I really dislike Tuxedo Kamen, lol)