How about conducting a champions league like competition. Let the teams be involved ONLY from the "country-type" leagues (like NZPL, EPL, IPL, APL, etc.). Get all such competitions in. If for a particular country a league doesn't exist on PC (WIPL, SLPL, PPL, etc.), count the actual team (real life team) of that nation in.
For player clashes, give the preference to the home team.
I am pretty sure that this would turn out to be interesting.