Yes, lvling on Disc 1 takes a lot of time, but that doesn't mean I get lazy later.

But I wouldn't use that for KoR. Developing limits has nothing to do with your lvl in this game. My record with lvls is everybody has lvl3 limits learned (up to Yuffie inclusive) before Junon. I just thought one time if I could get Omnislash on Disc 1, so I had Cloud kill 200 enemies and use his limits 20 times then instead of later. It's fun, although probably if you only do it once. Today I'm a little less insane.