[quote=@Kazemitsu]
Depends on if more alien species are allowed than what the games have introduced o3o
[/quote]

That would depend on the alien species you would like to use. As long as it can speak English or it's language is translatable like every other alien then I most likely won't see a problem with it.

I was thinking the characters would play as the various Pathfinders from each Ark while also controlling any squad mates they have. I know in the game they said the all the other ships like the Tempest were destroyed but that could be easily ignored so each player gets their own ship.