Create a map which shows all potentials venues
Lota of venues dont seem to have games hosted. If there was a map that show all potential venues then perhaps more people would host and thwre could be wider array of games at different locations different start times etc
D RS commented
Something like this might work well with the idea of '20 people are waiting for a game in 'xyz' area'. I might want to start a game in my area but have no confidence anyone would be interested in it so I won't go to the effort of organising something. I'm in that exact position at the moment where there's a venue near me with very little use of it's excellent modern indoor court.