Rimworld has probably the only DLC I’ll happily pay full price for. I mean, I play with literally over 100 mods so I never quite know what’s from the actual DLC, but the DLC has thus far always added really cool new features that those modders can build off of. It’s really worth the money, and they’re a developer I’m always happy to support.

Biotech is the best one till now, because it adds a framework on essential stuff that lots of mods can easily build on.

I know there were mods adding kids before, I tried them, some were good but all had some kind of clunkyness and big compatibility issues.

And xeno genetics may be a bit less powerful than the Humanoid Alien Race mod in what can actually be done, but again, a great base for inter-compatible stuff. And since they’re modified human pawns and not other beings you get easy hybrids and crazy mad science stuff around it.

Yeah, that’s definitely probably my overall fave DLC for the reasons you mention. I also really like the psionics introduced in (IIRC) Royalty. I’ll admit that the base implementation was kinda unimpressive, but the framework it added allowed modders to create really cool stuff like the big mod that adds like a dozen different psionic paths. (Can’t remember the name offhand, maybe one of the vanilla expanded mods).