Is there any chance there could be some additions to the options so you can state what level you actually managed to reach as a player. At the moment there is the options for Professional and Sunday League but i believe professional could cover anything from premiership all the way down to conference now a days.
I know the Automatic option sets you close to the level of the club you chose to manage however if you dont chose to manage a club at championship level you cant set your reputation as a championship level player.
I think it would only take a few more options such as
Premiership standard plyer
Championship standard player
L1 standard player
l2 standard player
I dont think its much to ask for to be fair and i cant see it taking long to code due to the feature of different reps already existing.