Yes, I'm heavily involved (as my user name suggests) and have 25+ years under my belt both as a rider and organiser (using both marking methods)
In Scotland now, everything is run under TSR 22B (No stop) which I personally prefer but I have no problem with two sets of rules, as long as the organisers, observers and riders know which set they're running their events with.
Up here, with less population, it makes more sense running 22B as this encourages the less skillful (that mainly means older ) riders to get involved too. I think 22A (hopping etc) is more suited to the young rider, and with more riders overall south of the border, two lots of rules are workable (as long as the organisers, observers and riders know which set they're running their events with.)
And that's why I think the rules should be left as they are. D.