Destiny needs some mini games. Tons of open world games have them.
Gambling down in the bar in the tower. A unique card game for destiny players.
Some volleyball down in the sink at sunset.
Above all, sparrow racing seems like a total missed opportunity.
I burn my money gambling on rolls. Why not raise the stakes with some other activities for guardians to have fun against each other when we don't feel like running PVE or crucible.