Okay, more on how I envisonaged the Football Modpack/Scenario:
Map: A relatively large rectangular pitch made of grassland (graphic left intact), surrounded by water (graphic blacked out). Mid-pitch on both sides of the field would be a corridor out to a "changing room" which would be the sole city of the two respective teams. In the middle of an ocean would be a barren Island which served as a base for the "officials and supporters" faction. As mentioned before, I changed all the river graphics to while lines and used them to draw up a proper field.
Units: "Goals" consisting of mid-defence, immobile units. Once they got defeated they'd be replaced by a new version of the same unit through the macro language. "Goalkeepers", high-defense immobile units that would have to be defeated before reaching goal. "Defenders", high-defense slow units, "Midfielders", mid-defense/mid-attack fast units, "Strikers", high-attack slow units (I was considering putting in real player attributes, but hadn't decided yet). All players would be replaced when defeated using the macro language, in a different part of the field. Sadly, Civ2 didn't have a "capture" funtion so a ball unit was out of the question. A "referee" unit, extremely high attack and speed, whick could permanently remove players from the field by red-carding them. Four directionally-facing "Grandstand tiles", immobile units that would surround the pitch on all sides and release "angry supporters" if anyone tried to attack them. These mobs could also be the result of a random event. "Armed Guards" or "Gates" that would block players from entering the opposition's changing rooms.
Injuries and Substitutes: Handled by random events during an attack. The new player would have to come out of the changing room.
Scoring: Since the Civ2:FW macro language had no counters (which I believe ToT has), I solved it by creating three "goal units" per team, the winner being he who defeated all three. Stupid method, but I couldn't think of a better one short of manual counting or a series of scoreboard unit.
Sounds: I was going to sample commentary for it. "And he's been given a red card!", that sort of thing.