Is there any way we could just start a new forum that couldn’t be accessed without a second membership to just deal with Evolution, Darwin, Dawkins etc etc.
That's not a bad idea clambake. Kind of like the StackExchange sites layout.
I don't think it fits with topics like this as it does fit with the subject matter of this forum - if you don't want to discuss evolution, just don't read / post on such topics.
But if people want separate forums for non JW-related topics then that is in the works.