@Rockhead,
I am not JP's pal Rockie and to suggest that I am is quite infantile and uncalled for.
I know what a nuisance it is when players change their picks and I think it generous of John to allow it. It is completely unnecessary as anyone with a penchant for the whimsicality of it could easily wait until Thursday evening before submitting their final choices.
I would anticipate that over a season such changes make little or no difference to the outcome in the standings.
They are a form of flouncing.