I am very happy to have soulmates in this masochistic side of Factorio! :)
I don't know if there are many really great mods that are compatible with Space Exploration anymore (and I know quite a few by now). Until one of the last updates of K2, "248k" was still around - the idea of having a completely alternative tech tree was genius - but now there are some compatibility issues that make the whole thing impossible for now. (I would welcome a mod as a fix, and would possibly get to work on it myself if I had the time. But at the moment you'd have to tinker with the files yourself - and I don't want to impose that on everyone; it's supposed to remain a click&play modpack). The mod creator is also only working on the sequel (Exotic Industries), which is not supposed to be compatible with SE. :'(
There would be "Sosciencity" (brings a population into the game), but it is still WIP and to my knowledge also blessed with incompatibilities. Maybe soon. ^^
Anyways; Otherwise come a few QOL mods, I want to restructure the modpack generally something, so that it is easier for everyone to take out or replace individual mods, and I will probably fuck everyone's save up a little bit with "Factorissimo Power Pole Addon" by notnotmelon - sorry for that in advance (but for that: the restructuring if you don't like adding power poles into every factory building xD).