I also added in a Diamond level at a higher price point for the event sponsorship. I put a fourth vendor timeslot on the books for this level. I hope that's ok - it is being sold at $3,500 so I'm good with it.
I will pull it if 4 vendor sessions is too much. My thoughts are that if we limit them to 45 minutes, it's 4 x 45 = 3 hours plus some change in transition for $9,000 in sponsorship (assuming they all are sold.
That seems like a good deal to me and will help keep the costs down for members.