I also wonder what this would do to the distribution of communion by the laity. Although there are times I believe it is essential it has become widely abused in most parishes. In a parish with more than one priest there is no reason why on Sunday masses they all (along with the deacons) cannot assist instead of lounging in the rectories or socializing.
I go to Spain a lot, and many people go to Communion (at the Cathedral in Madrid, for example) - and it’s distributed ONLY by the priests. I doubt that it takes much longer; and in any case, what’s the big hurry?
The Eucharettes may appear elsewhere from time to time, but they are basically an American practice, or at least the extent of their use.