A 1453-1815 era game would be a good guess for their revolution game. Even up until 1815 cavalry still were significant for those who like their fighting to be more up close and personal (just ask the scot greys at waterloo), as were bayonet charges and the like.

I don't see why people are so opposed to MTW2, especially if it covered a larger area. It would be a far different game from MTW1 with the rome engine, heavy cavalry could really make much more impressive charges as they should've, castles would be as imposing as they truely were during the period (RTW's walled cities make MTW fortresses look like sandcastles). Then you have the whole new and improved strategic map to really make that part more interesting.