That was very interesting, personally I'm very glad things like clumsy were added in, I'm dreadfully clumsy so it was one of the first traits I picked when creating my self sim, it does little game wise but it makes her more real to me.
And great kisser in the top five, I often pick that, I like the moodlet it gives for one, also as my self sim has repeatedly married a great kisser, Dallas Shallow I notice how it does make them more affectionate, he is also flirty but even so he does like to kiss more than anything, will even meet her at the gate when she comes home just for a kiss, if I have a trait slot that doesn't need a particular skill related one I tend to use great kisser, excitable or neurotic for the extra moodlets you can get.
And Evil sims based on Mr Burns, now I've read that it seems so obvious