Good luck!

Most dating apps try to answer the "who" and "where", but the OP is trying to answer the "how" as well which is brilliant.

Another twist I thought might be effective was suggesting a first date based on mutual interests.

Or, one person could lead with a blanket first date offer: 2 tickets to XYZ on MM/DD. Kind of like a timed auction where they select their date partner by a specified time.

I think it would be interesting to see the variety and creativity increase when you're showcasing a first date.