Not sure any expansion will top Mr. Torgue. Everything about the last DLC was amazing, the story, bonus weapons, but especially the dialog. I'm sure this newest one will be good though, the weapons, skins, and heads look pretty cool.
The reason they want to do it differently is because in the first game when you had all the DLC's and got to max level, with the bonus points from Moxxi's DLC you could all but max out your character. This led to there not being a lot of diversity into
the builds. They want people to think about how they want to build their toon, not just assign skill points to every skill. Still not sure how it is going to work, or if they are even going to implement something different. It's all rumors right now. Won't
know until they actually release word of a level increase.