Mulligans in VTES?

I think that's a good point. The design of the game does allow for more flexibility as you build your hand out through the course of regular play. That being said, I can't think of a specific deck or archetype that would benefit more from a mulligan. Combat decks get master/action floods, bleed decks get stealth floods, vote decks also get stealth floods lol. The point being that everyone for one reason or another could benefit from greater consistency.

Solitaire combo decks. Namely those that need to find Ankara Citadel to start spamming Freak Drive. Malkavian Reversal of Fortunes solitaire is another, which cycles through their library to find their key cards.