User blog comment:Commdor/Would you play the next Mass Effect game if it is not a shooter?/@comment-4085370-20130501195725/@comment-5134521-20130502091556

Multiplayer with no lore for characters was a good alternative to have alien playable races.

They could also make several main character from differents races. Or if the main character is an explorer/smuggler/mercenary/pirate, he can be from several races with some specifics missions such as we had for the background profile of Shepard but still hard to put in place (maybe with only the 4 council race). But once more it is pure speculation.