The thing is, distributing Holy Communion under both kinds is not a necessity. And EMHCs should only be used in the case of necessity.
One or two priests distributing hosts only, with altar rails, can allow for a rapid process.
Incremental steps might work, however.
I recall reading of an experiement done at Purdue U. shortly after communion in the hand was authorized. It was determined that having the parishioners line up to the priest, rather than having the priest go down he communion rail, was 20% faster.
The thing that struck me at the time was that Lillian Gilbreth, of CHEAPER BY THE DOZEN fame, was on the faculty at the time. She and her husband had "made their names" doing time-and-motion studies. So it was somehow fitting that the experiment would be done at Purdue.
I was a member of the student parish at Purdue, St. Thomas Aquina, when I was a graduate student there.
Or intinction?spelling?