This is the first post you've made any actual suggestions that are reasonable though, before it was just vague whining and two seemingly based on complete ignorance of the genre we're talking about and/or not checking the main pages before commenthing.
Re: Tree structure: Maybe, and I've had the same thought regarding that among a few other things for the layout, but they're not possible to do with the weebly tool.
I really don't see how it gets lost when the details are in parenthesis, sorry. A few ways of generally expressing the amount of non-linearity should be enough for most people and then they can read the details if it's not like I said.
Since you're the only one to complain about having a lot of optional info for some points in parenthesis, in 2+ years, I'm gonna disregard it.