You can go to mobhack and make new units to oobs, copying say a milan team and changing the ammo loadout to maybe 10 missiles, rename it maybe milan+ or milan10 or whatever, THEN run it through the cost calculator and CHANGE itīs cost to what it suggests.
Now you can choose which milan team to use and pay real price for the extra missiles. Remember to not put your eggs in one basket though.
Donīt you think it adds some realism or whatever insight to the game by going with what the game sets you in visibility and v-hex placement or game lenght. Think it as an command from above to attack just now and in the set time, to be able to proceed/support other imaginary attacks/defends/delays going on somewhere else. No Battalion or Brigade commander has the final word to wait for the night or rain storm to use your better vision capabilities.
"There are lives and objectives, even the whole war, at stake. You are ordered to clear the enemy resistance in your sector that the 2nd Battalion can avoid being enveloped."
-Brigade General Imaginary Commander, 1st armored brigade
