i think the main problem with that place is that when you get to higher levels you have so many other spells and abilities that let you take mobs on faster and harder. at the dunes you're stuck with a limited amount of ability, so unless you have either 1. a party that really knows wtf they are doing or 2. a party with a sweet set up like two nins and four blms you're screwed.
i got good xp today with some good parties, but its nothing like what i get at higher levels. honestly, it has nothing to do with being powerleveled through the dunes. people get shit handed to them throughout the entire game. to say, oh stop powerleveling in the dunes.. it kind of just looks past the fact that people suck throughout the ENTIRE game no matter what.
the dunes is just an easy excuse for people to start complaining about how bad things are, or a good place to start pointing fingers.
i've said it before, and i'll say it again, i have powerleveled many people through lvls 10-25. Its not because they're bad players. Its because they're good players who don't want to deal with the stress of dealing with other people. I powerleveled Audino about 5 lvls through 15-20. Does that make him a bad ranger? I don't think so. I powereleveld Kenohkii's mages (we did it, he got his magic skills up, I didnt stop him from using them) from 1-15. Does that make him a bad white mage? NO! It just makes him a faster higher level white mage so he can help us linkshell people out with missions and static and other things we need a white mage for.
ITs so easy to jump to conclusions when you see people getting pl'd in the dunes. Its so easy for you to say, LOOK! there is the reason so many people suck in this game. The truth is the same bullshit that you see in the dunes happens throughout the ENTIRE game, just in differnet ways. You wonder how colbwa got rank 7? Come on. Face facts. Its not just valkurm. Quit pointing fingers.
you can get good xp in the dunes in certain situations. for everything else, theres powerlevels.