EDIT: The final poll is now live.
I just had a very exciting offer from sletch2003, the guy who modeled the Alpha Jet and the Sopwith Camel used in GEFS: he is offering to make a new model based on GEFS users' suggestions.
Please post a comment here with the name of the aircraft you would love to see next in GEFS. Depending on the number of replies (and their variety), I will set up a poll to narrow down the selection. At the end of the process, we will have only one aircraft that sletch2003 will build for you.
You can also pick one from his already extensive collection on the Google 3D warehouse, but he said he's looking for a new challenge, so let's be creative ;)