Everyone deep down wants to make sure their entire squad survives. So assuming that you go through the minimal losses throughout the series as in:
- Only losing Kaiden/Ashley on Virmire (Wrex survives)
- Getting all DLC characters (Zaeed, Kasume)
- Waking up Grunt and Legion
- everybody surviving the Suicide Mission (Squad only, looking for playable, not Normandy Crew).
Who will be left alive at the end, even if they are not part of the playable squad in ME3? And how do you keep them alive?