@brash strike
very much overrated alternating between shield feint and brash strike is a terrible idea.
Sorry, but you are not thinking this through.
Shield Feint and Brash Strike can be a very effective combination, especially later in an encounter when the Fighter is running out of other resources.
It allows the Fighter to keep one foe locked up and doubly encourages that foe to concentrate on the Fighter. The Fighter is not only hitting a lot, but the Fighter is also presenting a lower defense delta of 4 (2 for combat advantage, 2 for mark) over attacking someone else at a minimum of every other round (if the foe attacks the Fighter, it's worse for the foe if the foe attacks someone else).
Example:
Melee Ranger and Fighter are fighting foe.
Fighter hits foe with Shield Feint. Foe decides to ignore Fighter's mark and attack Ranger. Fighter attacks foe with Combat Challenge at +3. Ranger attacks foe.
Next Round. Fighter hits foe with Shield Feint. Foe decides to ignore Fighter's mark and attack Ranger. Fighter attacks foe with Combat Challenge at +3. Ranger attacks foe.
Next Round. Fighter hits foe with Shield Feint. Foe decides to ignore Fighter's mark and attack Ranger. Fighter attacks foe with Combat Challenge at +3. Ranger attacks foe.
Not only is the Fighter getting two attacks per round against this foe, but every time his Shield Feint hits, the second attack is at +3.
The Ranger can be healed. Allowing the Fighter to do more than double damage normal is suicidal. You've just turned the Fighter into a Striker and the foe effectively has two Strikers on him.
Foes should rarely ignore a Fighter, but ignoring him when he sometimes gets a +3 bonus to hit on his Combat Challenge and the chance to hit him is sometimes better than normal is just plain stupid most of the time. Attack the Ranger at -2 and give the Fighter an extra attack that is sometimes at +3, or attack the Fighter at +2. That's typically a no brainer for a monster.
The PCs already have 2 attacks to this foe's 1 per round. Changing that to 3 PC attacks to this foe's 1, just to attack the Ranger at -2 is typically silly, even without the +3 to hit on the Combat Challenge. Shield Feint encourages the foe to attack the Fighter even more and this specifically matches the role of the Fighter.
Compared to pushing or pulling a foe a square most of the time. No contest. Yes, there are situations where pushing or pulling a foe is awesome. They are just few and far between compared to pounding on the foe more often.