Well my destro lock is barely scratched:
http://i.imgur.com/lZAnvaR.jpg
My main buttons are 1-4, F1-F4 and F5-F6 for CDs. Untouched. Defensives go on the right, I lose Twilight Ward and health funnel for some reason. CoTE and fel flame of course are gone. Now HF and FF were handy for levelling and such but otherwise were rarely used. TW had some use occasionally. Only other thing is Curse of Enfeeblement, which I can't for the life of me remember ever using.
One new button for KJC. Sigh. Well couldn't stay OP forever I guess.
It was part of the identity a long time ago and long since ceased to have meaning. It did NOT feel better, it felt like a clunky leftover they simply didn't have the heart to cut like they should have.
CoTE should've been removed in MoP or earlier. It wasn't even good as flavour anymore.