*ahem*...
AWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW YEAAAAAAAAAAAAAAAAAAAAAAAAAH!
Borderlands remains, to this day, one of the few games I've completed multiple times and got all (but one, effing DLC with it's effing massive tasks...) of the trophies for. This is because it hasn't stopped being awesome after about five completions. Damn I love this game...
EDIT - I just realised I should probably answer your actual post. I'm hoping for more of the corporation's areas. Everything in the main game is owned by Dahl, and Jakob's Cove is, well, Jakobs, but I wouldn't mind seeing the Atlus and Maliwan areas. Also, character creation would be all kinds of sexy.