When the new Mara comes out, I might try building a deck around her, the Emperor and Boba. Six protectors will make him a good deal more viable.
I'm only counting 4 protectors there (2 Royal Guards, 2 Shadow Guards). You could toss in the BotF Mara and hope to use Join Me to grab a Guardian of the Peace for a 5th protector... then use Palpatine to grab Join Me back and grab another Guardian of the Peace for a 6th...
2 Shadow Guards per Mara pod IIRC.
Nope, just 1. We know card 1( the objective), 2 (Mara), 3 (Shadow Guard), 4 (Mara's saber), and 6 (Rage). Card 5 will either be an enhancement or an event, but is definitely not a Shadow Guard.