I’d like to see challenges in the application. Where you can bid/bet coins to a pool for example.
Anyone can make a challenge and limit it to either friends or make it global. You then set the challenge to either ‘winner takes it all’ or ‘proportional’ based on the total steps taken. You set the limit between 1 - 7 days and the bet cost .
Everyone bets the set amount, joins in and have a go for the pot.