I think this stems from the fact that zynthian, as the name implies, had one synth engine in mind while initially designed, and, as the deeper integration of zynaddsubfx and linuxsampler show, the ordering of parameters is something that’s valued.
Regarding ordering of parameters in pages as they work now i think that categorization or doing sections (kinda like what you see on hardware synths) would be a huuuuge think to make things useable, with names that make sense and categories that help you understand things at a glance.
I was looking a bit into this categorization of the parameters and then this idea of a bigger grid popped into my head, but still i think the lv2 parameters from most plugins need a lot of work and pull requests to make them use-able. Having said that somebody here tried something along those lines in this post
So this is something that’s still helpful for my solution, albeit not necesary as you should be able to tag(or name) things as you want (pages, controls, options within a control)