I basically use Cold Call PF % to determine how frequently a person calls my PF raise. Its great for positional raises, etc. As far as the cold call part, I dont really use it specifically looking at whether or not they are cold.
I personally wanted to make a Call PF % to go along with CC PF; however, it is impossible for us to do therefore it will never be available in PAH; unless if Pat changes the way he logs hands...