Actually, I love the level sync on ALL the content. It forces you to not be completely bad at the game. In "other" games you could simply go get amazing gear and power your way through content ignoring mechanics. In this way, whether you are doing your class quests or running a dungeon your level and gear are forced down to whatever level the content was intended for.

The unfortunate side effect of this is that you cannot solo easy content to make it harder (that was a pretty big thing and fun to do in, for example, WoW), but the benefit of forcing bad players to be less bad at the game is well worth the trade off. I am sorry you can't "play around" in the instance, but honestly I feel this is better for the game health overall.