Welcome to the guild! I'm not currently looking for any roleplays to join, but if you're looking for people, I might suggest posting your idea in one of the Interest Check sections. :) I'm sure you'll get some messages about it there.
Welcome to the guild. Haven't been here too long myself, but the previous suggestion does seem like the most reliable place to go if you've got a specific idea to run by people. On my end, I haven't decided if I'll be publically announcing what I'm working on.