That's all that I want... Respect for the original design. Make it your own but don't disregard it, try to make it obsolete or make foolish choices just for the sake of change.
Would love to see the Lost Predator (Battle Armor, anyone?) from P2 or something similar. And we have to see a new weapon/armor ability. Make it smart though, not just because something new is exciting.
What weapons do we want to see a return to and what needs to be left in the dust? Personally, I want to see the smart disc return in a less corny display. I love the way it bounces off walls in AvP2!