Why can’t relievers come into the game ready to go?
With perhaps 3 pitches from the mound to make sure there are no mound issues? I know this is where desire to shorten games comes into conflict with existing commercial time, but is it really necessary to have a full 2 mins 30 seconds for on-mound warmup?
Bringing back bullpen carts for every team and changing this rule could shave another 6-10 minutes off the average game I’d guess. Might require managers to start warmups slightly earlier but that just adds to the strategy imo.