I don't have very many "evil" characters. Willow (my RP build) and my Sorrow-Gale are the closest to evil of any character I'm playing right now. Both of them are vampire characters characters and my SG has the Ring of Namira (so I guess he's 1/2 & 1/2). My werewolf character (Skyler) is actually my good character and mostly only for the benefits of the resistances and no longer worrying about becoming a vampire.
If I made a brand new purely evil character I'd probably go with a mixture of Vampire and Flesh Eater. Something about the combination just sounds evil...times 2.
I believe he meant limitation as in the perkless werewolf/vampire characters. Since the Dawnguard DLC added in the skill trees that made both supernatural powers more powerful. I wouldn't call the "eat those you kill" a limitation. Simply due to how many people you kill in the game.
Most of my Evil builds use necromancy and/or Illusion. Others are Nihilists (Chaotic, actually rooting for Alduin to destroy the world so they can see it.) I often wind up with Namira's Ring because I did the taste of Death for Eola. one of my favorite endgame followers, she's at least tied with Jenassa with the broadest skillset. She uses Summons, Necromancy, Light Armor, 1 Handed, and other Magic effectively. The Necromancy is particularly nice, because you can get Twin Souls, Thrall two Master Vampires (Make one a Named one like Movarth) and all 3 of them will raise dead for you while you do whatever else it is you do. The Ritual is fine, but it's a 1 shot unless you glitch it. Every large melee with those 3 will grow your forces like the classic infectious Zombie Horde...
The bonuses from Cannibalism are nice too, especially for not having any penalties. I don't need any Daedric Artifacts to be Evil, though.