Silent has some great card draw (e.g. Backflip, Calculated gamble, Prepared; I don’t love Acrobatics unless at 5 energy), the best card retention of the original three characters (via Well Laid Plans), the most accessible block retention (Blur), a way of playing block for the next turn (Dodge and Roll), a way of converting any card plays to block (After Image), and the most reliable access to Intangible (Wraith Form).
So I find that with defense, there’s ways to make it work. Offense can be trickier, since you’ll probably be packing fewer offensive cards. If you’re dependent on getting a single copy of Catalyst on just the right turn, all the card draw in the world won’t save you with a thick deck.