Stuff you probably don't care about
rockclimb1
rockclimb2
rockclimbbeginner
rockclimbexpert
Good for a first mod, maybe some more handles so there are more than one route up per difficulty, so you get more than one kind of way up.
Some knowledge about tori movements to make sure you make it difficult for people looking for a challenge, and easy routes for the beginners might be good as well.
Nice work, I'm bad at climbing, so I wont bother trying it out.