Would be greatif Engineers would be added one day in game. They would build (or destroy) fortifications (in a certain amount of time),build mulberry, repair damaged cities, etc.
The scale of the game is not a obstacle : in the parameters, you may find that :(info.ini file)
#Defines size of land units (1 = company, 2 = battalion, 3 = regiment, 4 = brigade, 5 = division, 6 = corps)
At size 1 to 4, engineers units are not absurd.
And in addition, some heavy long range arty would be great + the possibility to give different sounds to different countries (like the graph system) : with that sort of good little things, ToF could become a very good "OPERATIONNEL LEVEL" game in addition of the "great strategic" scale.