A limited number of damaging vote cards. Especially if you want to play Presence voting, rather than Princely vote, since you can't use Parity Shift or Sabbat Threat. Voting is probably more difficult, but there have been four good vote decks made, all of which are capable of getting a full sweep of victory points Presence vote is not unworkable, you'll just have to make the most of your votes and use some praxis siesures, clan justicar cards and, especially, command the Harpies. I made a settite vote deck that was pretty evil. We also play a house rule for Charming lobby that makes it worth while.
Rare cards become more valuable.
I would have to begrudgingly agree with you on this point. Yes it will favour the player with the most cards, and yes, this is a bad thing. However everyone in our game group has a very similar amount of cards, and those of us who have slightly more than the others will often give away cards if someone requires then for a deck concept. This slows the game down a lot. We, as a group, enjoy longer games.