He did say the "entire weapons system" has been overhauled, and teased they've "combined" the new system and new AI for "much more involved" fights.
"The entire weapons system has been overhauled,” said Anthony Burch. “We only showed assault rifles today and even within the assault rifles, there is obviously a crap-ton of variety."
“It’s going to be the same way with the SMGs and custom shotguns,” he added, and said Gearbox “combined the new weapons with the new AI” meaning that “the fights are so much more involved and have so much more strategic depth.”
A huge boon to Borderlands popularity was the game's co-op support. The studio would obviously need a hole in their head to not further improve this feature set.
“We’ve got a couple of things we’re going to talk about, most of them not right now. We’ve made it so you can take a split-screen game online,” said Burch.
"We’ll be talking more specifics about that stuff going on. But yeah, obviously, co-op is a huge priority for us because Borderlands 1 was so fun with co-op, it’d be ridiculous not to meet that bar.” Co-op has been made easier as they "rewrote the system".
Apparently we won't have to suffer if someone else is a few quests off from our own character. Gearbox say they've eliminated all that fuss in the sequel. Borderlands 2 releases on Xbox 360, PS3 and PC next year. Are you all goose pimples for its return?