probably, if the unit text files are similar to Rome's. But remember, with M2TW being graphically far more intense than Rome, if it isnt hardcoded, only the best pcs out there could perform adequately with any battle on a large scale. I think CA have got the unit sizes just about right IMO for most users, but looking at it there may be a possibility that unit sizes will not be able to exceed the current level, as in the preferances file, a size of 'large' or 'huge' may not allow any more than the game uses.
Lentonius