E.g. Catharina the Great, tsarina of Russia, could orgasm just by having her feet tickled. She was very tactile. Sexologists have found that there are even women who can orgasm just by rubbing their ears! Can you imagine? Personally, I need smells to cum. Without the strong smell of a pussy or a shlong, it's a boring affair, I think.
Well, as I went down the list I was almost going to mark "my mouth and sense of taste," because that's an almost essential part of sex as far as I personally am concerned. But then I saw "brain," and that pretty much covers every part of sex. Without the brain and proper function of the brain, which includes thinking and attitude, no pleasure in sex would ever be possible. I'm glad you included that as a choice. But I'm not sure what you mean by "mindfucking."
Goodness gracious, after genetalia, what else is important? (As far as sex goes, anyway. I mean, try telling the captain of a nuclear sub that your genitals are important when your about to implode in the icey deep!) I suppose eyes are important, to see the Zulu's on the hill. I have spokan Washington.