There are alot of threads like this, but not exactly like this (well i couldnt find it on the to-do list), but reinforcements should not be multiplied in no card games, as it gives an unfair advantage.
The whole point of no cards is for there to be no suprises, with doubled and tripled armies, the suprises are many. I know some of you are thinking why dont you deploy as if he was going to play his troops, example of why this doesnt work: You own a continent and two of the borders are with a player, normally you would only need 2 more men on that country so he couldn't take it (if he is getting 3 reinforcements per turn), but if the troops are doubled you will need 5 more men then he on your bordering territories, which is a waste of troops that is not wanted in no card games.
The reason i bring this up because someone won a no cards game against me, admitting using the tactic, he called it 'stratergy' check out my feedback.
5/5