OK I was being smarmy there, since I always get annoyed seeing it instead of Teotihuacan. Monte Alban was a decent regional power, but its power and influence pales when compared to Teotihuacan. If you were to put Teotihuacan in it's place, it would be either two or three tiles north of Monte Alban. This city would actually be able to grow rather powerful, and still put plenty of pressure on the Mayans. It would be far more historical to have Teotihuacan there as well. It would be destroyed when the Aztec's spawn. I see no reason this is a bad thing, since it was largely abandoned by then anyways.