But they were accepted into galactic society after they retook Rannoch so why would they not be apart of the mass migration to Andromeda? Plus their liveships hold a lot of people and would be valuable for escorting some of the other races... and they would have adapted better immune systems by the time this game is released as this is what 100 years after ME3?
@DarthSherm
According to interviews they left before the end of ME3, went into stasis and wakes up centuries later, thats why it's playing out centuries later, they have been in cryosleep for centuries. They were slowboating. All Quarians were recalled to attack Rannoch.
Would they have allowed a small group to go elsewhere? Also, they even had problems collonising a new world in the milkyway with the milkyways supply and trade availability at their disposal..
I'm not sure how they would survive this... Maybe if they stayed in stasis for another five hundred years waiting for the other colonists to get more settled in and ready to support them and provide for them so they don't die out due to rough initial conditions.
They also wern't a citadel species member.
Quarians, Batarians, Geth, Vorcha were being integrated and preparing for getting accepted into galactic society. Geth and Vorcha were the most resilient species, they could survive as stoveaways among the cargo or even outside the hull of the ship hybernating.
Vorcha were known to come back to life after being crudely frozen and then tawned...
Krogans... We have seen at least one Krogan, so it stands to reason that Krogan didn't go to Andromeda alone.
The Batarians were hit first.
Like I said, there can be different ways to make them come along, keeping the bolk of the Quarian population in stasis until they got a survial chance somewhere where there is infrastucture.
Bataians, maybe the council scooped up a few refugees as an act of charity........
Geth, maybe they found out about it and sent a Legion like Geth with a storage containiner holding lots of Geth to repopulate a new Geth nation, and hid away somewhere on the ship, maybe a cargo storage meant to be opened very very late in the trip, or not until they reach Andromeda.
The Geth had sizable fleet resources and their journey would likely have been more efficient since they don't need Cryosleep to maintain themselves over the journey. So they might have sent their own version of an Ark after hearing about the council solution to the problem of survival.
Vorcha are known to sneak onto ships like Vermin and hide and hybernate etz.
Some species are less likely to be included but they can always handewave an explanation for sending them along.