Our cathedral keeps EMHCs to a minimum. We have 8 well attended weekend masses and 4 daily masses on weekdays, but we also have 9 priests in residence (an advantage of being the cathedral parish!). The priests make a great effort to schedule their time so they come into the sanctuary during the various Masses to help the celebrant distribute. As a result even with a large crowd there are maybe 2 or 3 EMHCs and more often than not fewer (often none). I assume this is based on the archbishop’s direction and it seems to me to emphasize to us in the pews that EMHCs are indeed meant to be extraordinary (if you have multiple priests in residence, it is preferable that they carry out this ministry). We also use the altar rail, so that helps a lot. At all masses, the faithful always have a choice: process down the centre aisle to receive standing (there are typically two priests waiting at that “station”) or process down either side to kneel at the altar rail. Altar rails definitely speed things along because we’re already in “position” so to speak.