Spukinda odd how valve contacts b4nny and shares info on updates and gets feedback from him, but nobody from the cs team contacts any pro players on feedback for updates. I guess it's because TF2 is still in an early development stage, which is good knowing that they want TF2 to be big.
This and also because Valve probably has a much better gauge on the communities reactions in CS:GO. When an update is released, Valve can watch pro-players in real matches/scrims play with the update and get feed back from there, like the infamous Revolver they added.
Plus most of the time, the pro-players and non pro players are fairly on the same page. Instead with TF2, there is a huge disconnect from what Pro-players deem a viable weapon, and what pubbies consider fun to play with. I reckon it's also hard for Valve to gather any significant data from pubs as those are hectic as hell. Also if the weapon is OP, or for whatever reason unusable for compet, it gets black-listed disallowing Valve to gain any info on it.
I guess that's what MM is supposed to help change though?