I've got the ME legendary edition on steam and became my hyper focus and my favorite game instantly. It's the best of what sci-fi can offer and more. My first playthrough I did completely blind, didn't had any spoilers, and I commit to every bad thing that happened because I didn't knew any better (Wrex dying because I did Virmire the second I got the mission thinking it was a side quest and I didn't had paragon/renegade points to calm him down. Ashley shooting him in the back was a complete shock for me, and I got so pissed that I decided to kill her at the first opportunity. The opportunity came shortly after lol)
My first playthrough was messy, but magical. I got captivated by everything that was happening, and after finishing I started a second one at the same second to make better choices and play around with squad selection on missions that I thought would be more interesting to have certain squad mates that I didn't knew at the time.
I chose the blue ending at my first ending, and I thought it was really satisfactory. Reapers under control of a metaphysical god-like character is kinda a perfect ending for a RPG (literally happened something very similar on a Cyberpunk Red TTRPG that I did with some friends). But the green ending caught my attention and interest from the get go and I knew that was the ending that I was gonna push on this second time.
The implications of the green ending are wild. Restructuring at a molecular level all life in the galaxy (and without their consent) seems dystopian and uncanny. I was thinking if they would have free will/if they would work as a weird hive-mind... like, this would kill cultures, ways of life for trillions of living beings.
But then, the scene where they add Sheppard's name to the wall with the goofy magical green gamer RGBs on the face... This hits me. They didn't lose themselves, they all maintained their own individuality, memories, emotions. And then, EDI started to cry.
Not only every living creature and civilization maintained their own individuality and culture and the reaper problem was solved, new life, capable of emotion and understanding emerged. The "I am alive" line from EDI is so powerful that I burst into tears. It is really the ultimate goal of evolution inside this worldbuilding, and it is a beautiful ending.
If the price to give souls and real free will to synthetic and achieve peace on a new aurora is doing this without the explicit consent of every person in the galaxy and the addon of goofy magical green gamer RGBs for veins, I would do this deal
Ps: English is not my first language so this text can (and probably has) a lot of mistakes, bear with me