I really hope that the best way to get exp is in a party. I'm fine with leves becoming a solo or small pt game but if party exp isn't the best way to level then everyone will just solo again and no one will want to party.

Now, having said that, I'm happy with what Yoshi-p talked about, but my only fear is that the exp will be better for solo then it would be for a party. I'm hoping we get more info on party based content for leveling be it raids, mob grinding, party quests, or whatever. I'd just like some clarification on what they plan in terms of parties.