Dev falling in love is bad for the game.

WOTLK, The infatuation with HAT was the bane of all the would be sub rogues. So sub rogues remain used for years so the devs could keep sub signature ability. HAT which was at one point good in a raid in a few unique situations but left the other 99.999 percent of the time player a sub rogue terrible.

That being said, just about every time I see a post about this is some spec "signature" is this one talent we can't change it, you can bet the farm the devs are hit by cupids arrow again and the game is going to suffer for it.