I understand. I usually make interest checks to see the general interest to see if the idea is a good one or not. I expect people to fall off upon seeing the fleshed out idea while also expecting people who had not posted interest, to join.

I do not expect you to stick to the idea no matter what it turns out to be. Just that if it is something you'd like, then I can expect to see you there. While no harm being done if it is something you don't like.