The idea I have for this is a person who is reincarnated into Naruto whom spends the next decade struggling with his researching career in Konohagakure until he finally decides to invest all of his effort into becoming a powerhouse by reinventing a kekkei genkai. Still not completely sure on the concept because I feel like it's too small of a goal but I do have several ideas for arcs already brewing.

I'm too lazy to do that