I think Deep Dungeon is a great place for getting to learn your skills at any sort of level. You can even practice with your full 60/70 kit long before you would normally get it. You can literally get a head start over people who level up any other way.

The thing is, baddies will be baddies no matter how they go about their leveling process. You can't fault DD or FATEs or any one particular leveling path for this.