The part of the rule of 4 that everyone argues back and forth against is, they need to keep it low to detract abusers, but it hurts the occasional visitor, who makes the trek to Disney maybe once a year, once every few years, or even once period; generally these are the people that make it a big family/friends trip because it's not a common thing you can just drive over any day you choose. I know people will say, well then just take turns and split the group up and ride attractions like that. The whole point of the trip in the beginning is to go TOGETHER, to experience it all as a group, a lot of grandparents wouldn't come if they had to ride alone. You wouldn't go to a restaurant and be told you need to split up and have 1 group eat first, then the second group eats right after, or a movie theatre, etc. etc. etc. Now, groups of 20 is overkill, half the time you couldn't even ride most rides at the same time regardless due to ride capacities. Let's just hope there is some flexibility in specific cases because a lot of
DAS families have to do a lot of planning, and teamwork with family/friends to even make showing up to the park possible, nevermind riding the rides.
I do get the concept if you allow for 1, then you open the door for others. It's a hard problem for Disney to please because it's such a popular, large international theme park company that attracts large parties/groups.