Yes and I really dont like the term "game" being used for SE, it's a universe simulator like Starry Night or Celestia.You have breached the most sacred rule of the SE forum, Astro-eagle: mentioning the existence of that accursed game! You may have to be banned.... .
Certainly, and because SE is a true space simulator and NOT a fictional work like The Game That Will Not Be Named, it would have a far more accurate depiction of alien life, based on the latest research and theories like the rest of the astronomical data in the game. But, as stated countless times, that is something for the far future, once everything already in-game has been finalized and the game has it's official release(s). The implementation of extraterrestrial life that is generated and presented in a plausible way that meshes well with the tone of the simulator would be a time-consuming addition. No doubt it would be one added incrementally, building off of the already existing and so far generalistic ET parameters.
As far as simulating life, I'd like to see structures rather than actually animated life. It leaves something to the imagination. Nothing wrong with showing stuff like trees and grassland and etc (photosynthesis in different colors like we have discussed) but also things like floating cities, and towers made of sparkling crystal but mysteriously empty and quiet with long winding passages and dark dreary dungeons and marvelous new forms of technology and even cities inside transparent domes, but all mysteriously abandoned. But perhaps some hints of intelligent sentient life like a glitter or spark you see out of the corner of your eyes or blinking eyes (1 2 or 3 or more lol) staring at you and when you look in that direction they disappear, or a shadow that seems to follow you but when you look around it vanishes (or multiple shadows depending on the number of suns) as well as ordinary life like birdlike creatures flying high up in the skies, making audible cries when they see you, or a howling that sounds like a wolf at sunset or moonrise. I also want to see creatures swimming in the sea like fishes and perhaps some hints of something larger and more dangerous that must be avoided at all costs (with tentacles or teeth or both) as well as more friendly creatures that want to help us and are curious about us.
I also want to see weather be simulated- it can be done- just see Yowindow. You could simulate the weather all over Earth to begin with using weather data like Yowindow does and then it would show it raining where its currently raining, snowing, windy, sunny, partly cloudy, etc.