one thing about rathe mountains, a couple years ago they made the giants belly casters, I haven't been back there in years, but figure they probably still are, which makes it a less than ideal place for charm kiting. other places to check out around 35 that I really liked, hmm...I think frontier mountains may be a bit low at that point, but if not, the giant fort is an excellent place to learn to swarm kite. I also liked swarming in katta castellum, on the luclin moon, and I think that was good till about 45 or so. the aviaks mentioned at 45 are excellent by the way, although i'm sure there's other newer stuff around now, i bet blackfeather roost would be really good at 45 too for example, but aviaks are such a classic.
If you're new to charm and don't want to jump into swarm kiting right away, or if you like fear kiting, places like overthere at 35 was pretty good, and you can charm, chant, and/or fear. dreadlands after overthere for a fluid mix of all the above and endless fun chaos. wow, i'm totally stuck on kunark tonight huh.
gunthak is still good, followed by dulak harbor followed by nadox in the loy area. dawnshroud peaks had some good hunting at 35.
There's a big huge world to explore, a big empty world, full of good kiting. I used to just run around and explore and if it looked good I'd do it, but I never really did the grind thing.