We could vote on what sort of project to make at the beginning, and then develop our own content for the common theme.
For example, we could make a series of epic high level quests that eventually lead into the Dragonborn "mantling" (if you don't know what that means, you haven't wasted as much time as I have learning Elder Scrolls lore) Talos and becoming the hero of mankind that defeats the Thalmor. Something that would represent a major continuation of a Skyrim theme and incorporate a lot of Lore.
Or another game entirely. Up to you/us.
If you'd like to discuss the idea, just pop in and say hi. We can discuss how such a thing would be best run, and what sort of projects would excite us. Just please don't enter and say "This is a bad idea and here's why..." yadda yadda. I know it's fun to burst bubbles, rain on parades, and otherwise disparage ideas, but team efforts have been done before, and I think this would be good place to organize one.
Also, if you have one skill that you are good at and enjoy, post it here if you'd be interested in working on this.
For example:
Hi, I'm Il_Ducey and I make companions well. I'd like to make a companion that lets you choose their perks through dialogue trees that would serve as a plot character. I can also voice act, and would be willing to voice said character.