Tomorrow afternoon (or today whatever--12 hours from now) I'll make the Main Project Thread and ping you all. There I'll announce the topic, highlight the format and methods of submission, and answer other questions for the duration of the timelimit. Also feel free to share ideas there.
And from here on out, this thread is over, so I'll be locking it.
Edit: Also you can view the final results of the First and Second polls in the reserved posts under the OP.