Forerunner of the Coalition can make sure you find the right scoundrel for the situation far more consistently
Yes, Baral, Chief of Compliance works with buyback
You can play extort cards in any deck that can play the base cards color identity, even if the hybrid manas second color isnt in your commanders color identity
The deck includes seven cards that proliferate , which is about the right number, but somehow it feels low unless you have Surge Conductor in play
Some will boost up already powerful archetypes, while others may give weaker archetypes the cards they need to push themselves to the top of the metagame
If your Commander table is cool with extra turn effects that dont exile themselves, Timestream Navigator can be a really powerful card