Wedwell sounds like a reverse waitlist - a try me too tool for vendors. They might do it to get first customers but it sounds like too much work for good vendors who already have a waitlist for their booking time.
We're still iterating, but right now we reach out to vendors proactively. So ideally it's little/no work for the vendors to have to search for events, we post them on events that they should be able to handle. The work that they do to create a proposal is no different from the work needed for any clients, if anything our templates may make it easier.