i was just thinking about this, and would like some input on it.
Since the mortar is just a mobile arty piece, wouldn't it be better to make it cost a bit of fuel, since almost all arty costs fuel (not priest). maybe just 20 to prevent the massive spam of them.
Generally when i play soviets by the time i get the support building built, i am sitting on at least 1500 mp, my friends say the same thing too, so it makes them easy to spam.
Just wondering what u guys think.