will this be getting an update? looks neat

Right, yes, Astros were built for microgravity. That makes sense and is mentioned in the description which I swear I read fully and completely comprehended.

Have to say, I'm glad I'm not the only one out there who puts way too much thought into the lore and background of things in Rimworld.

the true christmas mod

Yes, I did put some thought into the numbers. Thank you for noticing, @LAJ-47FC9 (Liara)!

I was on the fence about whether M-Gens should have the fragile or pain sensitivity flaw, and I might switch fragile and pain with the Syren. The Astros were engineered to not suffer bone density loss in microgravity as part of the package to let them live a healthy life in deep space.

I was going to write a comment picking on a little niggle in one of the xenotype descriptions regarding generations, but I think M-Gens living in space for a hundred generations is actually about on point, given that the average human generation is about 20 to 30 years. Even if it's accidental, good job on the math!
Very neat mod, very much enjoy spacer types and I'm sad that we don't have many represented in xenotypes present in vanilla. My only recommendation is that I would give M-Gens and Astros the Delicate gene as well, to represent bone embrittlement from a lifetime of microgravity life. Maybe Strong Crafting to offset that, representing the technological acumen it'd take for folks to keep space stations going over time - all sorts of complex components to craft, after all. Either that, or leave it with a slightly higher metabolic efficiency, say that the lack of bone and muscle maintenance leaves metabolism free for other things.

I added a starting scenario where you are a spacer celebrity and their handlers who got lost while on an interstellar tour. You arrive hungover and with lots of money, but not much else. A random trader arrives on day 2.

Very creative mod, thanks.

There's a beta for Save Our Ship 2 and it's working so far as I can tell, you could probably build a extension based off that. Beta is on SoS2 page or you could also take it from their discord. A patch shouldn't conflict if other uses don't currently have the beta AFAIK

Updated! Now if you have Alpha Genes installed, Astros will be photosynthetic.

The official version of Save Our Ship has not updated to Rimworld 1.4, thus there is nothing I can do there.

Very well thought out and interesting

I'll look into those two mods and see what I can do :)

It would be very nice if the pawns of these races would receive advantages if they were in space, for example, when using the Save Our Ship mod. After all, they are astronauts!

any chance you can improve this by using stuff from Alpha genes?
they have actual photosynthetic skin for example