Everyone I killed stayed dead and certain specs required you to be a certain level to play (only 4 or 5 specs were unlocked for new players, don't think Nomad was a popular spec or it wasn't with the people I played with). I saw more of the Android, the asian chick, and the chick I played then anything else. Due to the fast pace of the multiplayer I really don't see rejack being popular because it's faster to just die and respawn (kinda like self-res for locks in Destiny. more useful for certain game types and I'm assuming Team Death Match is not one of them).
Yes there is a chick with the bow and she is bad ass (and her accent makes me think shes Russian). In fact there's 3 female character to play as (a chinese chick and I think either another).