You are unlucky. In my draw, all players can't be bothered to play. They do log in as I see lineup changes to some but they just can't be bothered with the event. I can win the daily tournament for this phase playing only 3 games a day. Lol.
Maybe you drew all the 'active must win' kind of players and I got all the 'i ain't gonna play for these kind of rewards' kind of players.
I do like your idea on 1 free challenge against every opponent at anytime. And we only pay for anything extra after that free 1 try. We get our sleep and they get their tokens.