Looks a great project with huge potential! A few ideas for future direction:

• Be able to set your availability for week ahead or specific days (rather than relying on clients to complete)
• Create specific project links, so client signs-up via 3 buttons. 1) choose time, 2) pay & 3) add email. Reason is that client probably shouldn't need to add location/link - this should be driven by the calendar owner)
• Zoom integration - given 95% of calls are actioned this way
• Allow streaming of sats during meeting - this I think would increase the vitality no end
• Allow calendar owner to pause/refund portion of sats in escrow if client utilises less time