What about adding an end-game module, maybe craftable only with something obtainable from a rocket launch (like space science), that combines speed-productivity-efficiency? It would become available only after a rocket launch, when you are transitioning to a megabase, so it would't be too op

Missclick

Well, I always had an idea for modules that combine all 3 types. But I don't think that's appropriate. I have plans for more global mods and improvements for my existing mods. Some people already pointed out (in FactorioRU discord) that my merged modules are kinf of cheaty and would need better balancing with how the stats are calculated, as well as recipes and research.

Anyway, thanks for posting this!

This question might seem strange, since I asked for op modules: would it be possible to add a setting to enable/disable modules 4-6 and/or the combined version?

I always thought of adding setting to turn on/off certain features, as this mod is kind of combination of everything.
So settings will probably be added.