Is it possible to edit referees' stats?:
Yes, it is. This is what to do: open the referee.dat
(in example c:\games\total soccer\sys\referee.dat) in
your team designer (in example c:\games\team data\teamdes.exe).
Now a team containing not players, but referees appear.
Now you can edit the referees' stats the same way, you
usually edit player skills. The only rating that means
something, though, is their keeper skill. That determines
how strict a referee is. Maximum 100 means that the referee
gives at least three red cards per game (a little exaggerated
maybe). Minimum 1 means more or less this: "That's not a free
kick! He isn't entirely dead yet"