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

DJ's How About A Dance-Off?
Hey community, how would you feel about an ezrobot dance-off contest? Here is the STL file for the microphone:...

Tmesserschmidt's Simone AI (Openfembot)
First Simone Article has been published in Servo Magazine! https://www.servomagazine.com/magazine We made the cover!...

DJ's JD Humanoid Puppet
Credit for this robot idea goes to @Nink, who suggested it based on my PWM Servo Feedback behavior control. I wrote a...