first of all... keep the human players away from the robots. the penalites really killed a lot of the game this year. i know they were necissary... but this year.. lets just have the robot and the human player stay out of contact.
i've always been fond of ramps... but instead of having a ramp like this:
_/\_ why dont you set it up like this:
\_/ ....okay i know that looks funny.. but think of it as the robots starting next to the diamond plate on their alliance side of the field, and they must go DOWN into a valley of sorts to do something or other... i dont know... i was just wondering about something different other than a large ramp in the center of the field and rather, 2 smaller ones on each side of the field. you get points for King of the Hill depending on which ramp you're on. lets say you're blue. you get 5 points for being on your home ramp, but if you go over to the red side of the field and get on that ramp/platform, you get 15 points.

i like the 3 v 3... so make the platforms only big enough for 2 robots each. or maybe you could have on robot on a platform and have an alliance bot work to try to RAISE the platform as much as possible with that robot on there... the higher the platform, the more points. this would force there to be a lot of different kinds of robots..
strong robots, but also very
light robots so that the platforms would be easier to lift. i'm not sure how you'd get the platforms to lift though. a pulley system doesnt seem very effective... and i seem to think back to the year where there were teeter-totters (sp?) and you had to balance goals on them...
-shrugs- just my two cents. =)