Yes this mod does work both with, and without, Space Age.
MK4? Already included, by popular request, it's expensive though!
Higher tier equipment? Not at this time, maybe further down the road.
Update? I try to check in somewhat regularly, but I can't always update immediately. I may take on a collaborator or two in future, start a discussion if interested, and show me what you can do.
Discussion removed? Was probably a very old thread, or contained a bug report that has long since been resolved.