For 10 points and a force upgrade slot this upgrade gives you the ability to override all restrictions on one order you issue when the commander this is equipped to is the one issuing the order.
This card is not useful in many styles of lists, but in the lists that want this upgrade this is priceless. Being able to issue orders to your anchor piece who is far from your commander can be a game deciding advantage.
Battle Meditation really shines in a diverse list led by a force user - at this point it is best used on Emperor Palpatine who can also combine his Entourage ability to give incredible activation control to your force. Although it is also good on Luke who gets less benefit out of other force upgrades because of his lack of Master of the Force, and this upgrade not exhausting.