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My friend plays Shyvana and Akali with some frequency and Shen all the time. He says all three of them are fine. He wants to play Renekton, though, and says that he feels Renekton's early game is too weak. He says, "I don't feel like I have enough damage or utility to contribute early-game. I have a much easier time getting him started in Summoner's Rift, but I don't know why."
I don't play barely any Energy or Rage champions, but I am fond of Kennen on SR and I've tried him a few times on Dom. I also have the amorphous feeling of "This isn't working and I'm not sure why" with him. So I guess I'd say Renekton and Kennen could use some Dom love, although I'm not sure what kind in the slightest.