Umm i have 2 private messages, one was to reply CH's message to me, one for asked question. I saw some of the new creatives have a lot of private messages, and yes they won more. So i think private messages indeed help haha. Did they do wrong by sent many messages? No, cause theres an opportunity to do so,
What if theres a limitation of how many messages that can be send by the creatives? lets say 10 messages in a month? so creatives still have opportunity to send messages, and CH still able to reply without getting overwhelm.
I dont think its good to put off private messages and if all questions for CH were seen by all the creatives then when CH answer it, i do think many people tend to follow one direction, and it reduce the creativity.