Ra's is a Seventies villain who has long overstayed his welcome.
There is no depth to Bane, he's like Doomsday or Venom, just plain bad and reeks of the 90s.
Two-Face has been there (almost) since the beginning, he's incredibly difficult to get right and when they do, he rocks.
Power does not an interesting villain make.
Honorable mention: Killer Moth