Dang! I just posted something like this in the Wish List.
Total War requires a different engine and asking for that is asking a lot. I would be happy if they used their current engine but switched to brigade level on a small scale map. Instead of a map of Europe, the game gives you the option to port over to a map of the area you are fighting in and sprites appear at the brigade level. Infantry figure, cavalry figure, artillery figure, but keep using portraits for Division, Corps, and Army commanders.
Same chain of command rules, same activation rules, same game engine, just smaller scale.
(PS: I have about 7000 15mm figures. Painted them all myself. Don't do much table top gaming these days, though.

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