Since implementing Google+ like "Collections" (i.e. sub-channels) in Zap a few years ago and not being pleased with the result, I went back to the drawing board. Now I've got a plan for making them effective. In retrospect, the whole model was backwards.
More later. I'm still in the design phase and there are a couple more details to flesh out. But overall I think this will be a dramatic improvement over all the other fediverse implementations of this feature (laughing).