Absolutely not. Your ideas are shortsighted and will limit this game. I have no problems with flanking enemies. The game is too easy already, adding tactics will make it beyond boring.
You have to use and hold left-click to position your army, and when positioned, let go of left-click to formation, then quickly reposition by holding left-click again. It's not hard. I rarely ever die, and I usually do only in the very early game.