Well the whole thing is looking good to me. I'm bombarded with opinions all the time. Chat, PM, forum posts etc etc. If I resist to change schemes, I get accused for having no balls. If I do act for changes, people protest against. It's like whatever the decision is, I'll be accused for something. Ain't that neat?
All the changes on TUS, always had the agreement option. Team17 has been with 7 girders for years now, but still if 2 players agree on the unlimited version, they can play it that way. 7-girder is the default one in case of disagreements. Even you can avoid a scheme like Hysteria via agreement. (only not in PO)
If you don't like these changes and you think there are many supporting you, then play the old way. Play 3 worms TTRR. Nobody's gonna stop you. Your only problem would be playing with people who want to try the new thing.
It also must be mentioned that you are reading too much into these changes. There's no blocking in Elite, it doesn't matter whether rope knocking is allowed or not. You can pass a blocking worm in #PT, your worm would just slide through the other worm, still no block.
I've played 5-worm TTRR a lot, it is the same as 3 and a lot of fails. Simply 5 worms makes you overconfident that you have enough turns to try and most of the time the result is the same.
I am trying to make most of people satisfied. The experimental season will just be something for all to actually see their changes in action, otherwise we'll have theoretical flaws for eternity and people constantly nagging.