>>719147357
There isn't one.
I have a conspiracy theory that the reason the writers botched the ending of the mass effect series so hard was somewhat of a fuck you to EA. I don't know if anyone remembers the era where gamers hated EA because they were buying up niche franchises and dudebroifying them to mass market them. Mass Effect was one of these series, where the sequel was produced after EA purchased Bioware and you can witness the dudebroification with your own eyes by looking at the differences between ME 1+2. I wonder if they didn't intentionally destroy the IP as a silent act of rebellion by making the mass relays blow up in the end. The mass relays were the keystone of the entire series, blowing them up effectively puts any sequels written into a corner and ensures that nothing can happen in the universe going forward. It's why Andromeda had to come up with the whole Ark Ship bullshit to try to side step the issue that the Mass Relays are fuckin gone. There can't be any more sequels because the setting is irrevocably damaged.
The only way they could possibly make a continuation of the story (now that the whole breakaway society gambit has been played) is to set a new game so far forward in the future that the mass relays could have been repaired/rebuilt. This removes the two main hooks of the series though, which were the galaxy wide existential threat and the Shepard team.