I don't have really any wild ideas. I wanted to stick with more realistic ideas... I think EZRobot's idea to go with the EZbit connectors is a great idea. I'd personally would like to see you guys put together some sort of mega developers kit that would include various EZbit connectors, more servos, difference choice of wheels, etc... I'd also like to see some new robot designs and maybe some more types of EZ Bit connectors.
Other robots from Synthiam community

Cliffordkoperski's F.K.Q. Robot
21dof 19 servos 7.4 volt 2000ma run time 1h servo brackets $70 servos $200 ezbv4 $100 ezb camera $60 cheap as u can get...

Rb550f's Meet Ewa
This is my 16th robot project EWA. Built from a Walle Ucommand toy. It has a 3d printed head from Xlrobots. I added a...

DJ's Roli Rover Robot Chasing Red Ball
It seems that programming an EZ-Robot to chase a red ball is a popular exercise of mine. Ive done it with this hexapod...