sure! The recipes look good to me., they are reasonable.
I am thinking about if it is possible to unlock the trains a little bit earlier, e.g. unlock the first space locomotive tech right after space science instead of after the utility and production sciences. Then thing is, after the space train unlocked, all the rail based factories would be removed, redesigned, and reconstructed to fit the new length-8 wagons, which is a bit suffer and unnecessary. This is kind-of discouraging build early train based factories. Old-ass like me it totally fine with it, as I can easily build a main bus strong enough to support utility and production sciences. However, new players may not able to do this, they might need large rail based factories. So I am think if it is possible to add another early primitive length-8 train unlocked much earlier, or simply unlock the first space locomotive tech right after the space science.
Reguarding this, i have two ideas: either i make it so that there is just a "Industrail train" as a tier between vanilla ans space trains, and make that be after chemical scinece, or i move space trains to be after yellow science and rename them to high speed trains
Edit: i just noticed LDS is behind blue scinece, i think i got yellow scinece requiring LDS confused with it being locked behind it, so i'd moce Space trains behind blue science