warcraft 3 is perfectly banlanced and it has a max unit count of 100, that is strategic, 40 remains me of battle realms and thats not good
WC3 is very well balanced, but I wouldn't say it was perfectly balanced. Besides they have had years to patch this game for balance issues, and they still release patches to update the game because of balance issues. They also have a max supply of 100, w/ some exceptions. You would only be able to get a max unit count of 100 by building only peasents, peons, acolytes, or wisps.