you dont have to sacrifice the integrity of gameplay to monetize a game. The game is already on shakey grounds with purchasable commanders. sc2 and dota2 have shown that there is no reason to sacrifice the integrity of the gameplay to remain profitable.
id rather see (and i would most certainly purchase) another expansion like the western fronts expansion way before i buy supply so i have the option to call in shock troops for a limited number of games before i have to buy them again.
You are correct I was rather reffering to the statement by OP that new content should be free which is impossible to do.
I don't get why Relic does not continue the Theatre of War? It was a really good idea to make money with interesting scenarios and best of all, it didn't affect Mulitplayer in any way.