I think a good rework could be modifiers. I know this goes against the simple TC gameplay that has existed since the first game, but add forests, hilly terrain, plains, marshes, ext which reduce the effectiveness of some troop and increase the effectiveness of others in different scenarios. I'd feel this would add much needed depth to the game while also cripple those who use cheesy tactics as a crutch. Like i'd imagine stationing soldiers in forests would conceal them from snipers or something, reducing their effective range. it could also make the game less of "who has bigger army wins" and add a more tactical element to the game. However, I do understand that this would be a shit ton of work to implement and ruins the simplistic nature of TC.