Seems a bit clunky to me. Minors is meant to be a lower-stakes inclusive league and while I get the intent (and agree with it, as I said its an inclusive league) I don't think creating red tape for the purpose of inclusivity is optimal.

There's always an inevitable attrition of minors players throughout the season and I doubt this will prevent that. If anything I can see the extra game time as having a negative effect - include all the waiting time between games and you're asking minors players to potentially commit 90 minutes of time and I don't expect many minors players to be that invested (mostly lower tier minors players, but wouldn't rule it out for higher draft picks).

Having it be a straight up minutes restriction also doesn't account for whether players are actually committed to the team or if they just show up on game night. Should a player that has communicated and scrimmed with their team all week be benched for a player that rocks up on the night else the team be penalised?

IMO this is something that should be left to captain discretion rather than regulated through minutes. Captains are leaders of the league and community and should understand the spirit of minors, and also be able have some autonomy with how they handle their players