Give each player a 10 minute overall clock, or a shorter fixed clock and you take damage if you run it down.
Sounds good. I generally play like that’s already there.
I suggested earlier that players could flag they want a fast game. If, after the current (unaltered) matchmaking system selects players, both players have this flag set, then they get a fast game.
Please please please give us blitz. I’m falling asleep playing someone who runs out the clock each friggin turn.