Yeah, I see what you're saying: to have bucket-ranges that carry the same weight. I like that idea.
The idea of these engagement scores is to compare engagement between peers and how each user allocates their attention across their network. So things like zaps would be relative to you and me and our balance, for example. My gut hypothesis is that regardless of the weights of any of these note kinds, the engagement between two friends will always be roughly equal. And "followers" are people who expend a lot of engagement with relatively less in return. You can have big influencers with lots of followers and few friends, because maybe they keep their social circles private rather than in the open. I just want a program that lists my friends' npubs tbh 😂