Can't agree. A great villian, for me, should have emotional complexity/conflict and know right from wrong but consciously choose wrong. Walter White is great. Ledger's Joker's insanity masks complexity and a sense of right and wrong (Phoenix's is better) and Kane's anger mutes his. They're caricatures of villains, despite their exciting portrayals. My litmus test is weird and subjective so I get it if you find it too limiting.