I would say remake as many as they can, but make them somewhat bigger because in the bigger games something seems wrong when you deploy and the redzone is right next to you. Also make sure to remake them without buildings that you can stick half your army in when you play at smaller unit sizes.

Playing a match where an enemy sticks half his army in a building is silly and makes for a less interesting battle and you have to either have an arty for it or hope you have the strength to take it with your numbers.