Love your mod so far!
Although I wonder if it would fit better with Space Age if access to the upgraded versions was spread throughout the planets?
Something like:
Mk2 - Vulcanus
Mk3 - Fulgora
Mk4 - Aquilo

Regardless, cheers!

Hi, thanks.
Personally, this mod was born more for 1.1 base/megabase. With SA, there isnt much need for big trains as belt stacking and super-fast-beaconed machine make bases a lot smaller. With SA, I probably would use a Quality Wagons mod or similar since SA already adds quality. IDK if locomotives get speed boost (probably not as generous as this mod), but as far as im concerned, removing all the Mk2-3-4 wagons/fluid-wagons for the quality version of the base one would be a welcomed simplification

Fair enough.
As I am personally not a fan of the quality gamble, and am trying to make a rail base, to hell with space or machine efficiency, I was happy when I found your mod and i'll keep it haha