First I'd like to apologize for my tone in the previous response -- I've just put a ton of work (probably a month nonstop and I literally just deleted 20 GB of saved game files) into researching this issue and to feel dismissed off-hand wasn't the response I was expecting.
I have a full write up
here, but basically every league setup with no luck. If you feel that what is produced especially from feeder leagues is appropriate for the game, then I at least offer as a concession for all of the fielding ratings to increase with the fielding rating modifier. Currently not all of the ratings and most notably TDP, C ABL, C ARM don't change with the the PCM fielding modifier. If they did I could at least create the league as I expect to.