And also now no walls(the most effective way to focus the lumber on hero) is what I think now impossible 'til I see a replay doing it on 6.44.
In a game that is based entirely upon building a base and trying to survive, having heroes that are strong enough to destroy everything and completely eliminate the need to build a proper base violates the spirit of the game. The commander was NEVER intended to be capable of doing this. He was so broken that average players could use him on the hardest difficulty with air and invis without walling, and then go on to easily solo eternia. Eternia is meant to be the ultimate accomplishment in the game, a challenge that players are suppose to hone their skills and knowledge in order to handle... yet, average players were abusing a broken strategy and completely undermining the challenge.
The dev team is trying to ensure that no wall strategies will not come back into play.