Having been a cashier in a grocery store for three years now, I can sympathize with all of your requests. Indeed, all of our margins are razor thin, as budget cuts and falling prices have forced us to cut hours and cashiers and, indirectly, increase stress on the front end.
Ali, I'm very surprised your grocer hasn't switched to the scan-and-bag method. It really cuts time down as the bags are right beneath where the scanner is.
As for the self checkout, I can safely say that is a very bad idea. One person cashing out six people at once? It's impossible to keep check on everyone. There are many, MANY people who will take items that are expensive and use a PLU code for oats or cheap candy. They can get away with it because as long as the weight is correct, the computers cannot tell the difference. Yes, I can notice some of the perpetrators that come through the Evil Scan, but I simply cannot catch everyone, leading to loss.
Guess that's the power in numbers, though. The more people we have on this planet, the more that a select number of people can get away with having done. It's like taking candy from a baby. The system we've implemented is helpless to theft, ignorance and a passing of potentially precious life instead running rampant.