Hey /r/KerbalSpaceProgram --

I'm a veteran KSP-er, checking back in on the game after a year's hiatus or so. Was just wondering what you all thought were the best, must-have mods out there these days. I find it's pretty hard to get the pulse of the mod ecosystem, so just figured I'd ask.

More specifically I think it'd be fun to design a realistic space station, maybe requiring actual life support, doing more science, maybe even taking photographs of kerbin and sending them down to ground control via satellite link. What mods do you recommend? (None needed for flight control/docking/landing, more interested in great parts, scenery, realism, etc).

Thanks!