Count me in, despite the extremely long wait and the likelyhood of me forgetting about this entirely in a few months due to my turn being so far down the road.
Whoever is responsible for managing the passage of the save (and it needn't be the same person for the entire project) should PM people at least a turn or two ahead of when they are scheduled. That should be plenty of time for any active/semi-active member to respond.
No reason to stop taking applicants. Let them wait two years before they get to play, it'll be fun!
Agreed. The finished product (if, indeed, it is ever truly "finished") will be a monstrosity, the depths of which could not possibly be explored by a single player. So long as the most current save is consistently made available to the community, there will be no need to ever stop the project, except for lack of interest or management.
As far as checking saves once they are uploaded - this seems like a good idea, but in reality it will probably serve to slow the project down, more than anything else. Besides, placing/leaving cage traps in your fortress only serves to discourage adventurers from exploring the site that you have painstakingly contributed. I would simply advise all players involved with the project to avoid use of cage traps entirely, lest you forget to remove them and end up wasting your turn.
If removing the lowest cavern layer is preventing the presence of curious structures, then we need to keep it in. Although, this (as well as all our other concerns) will need to be retested once the new version is released. I suspect that there will be a week or two after the release before we even begin with the first turns.