I have a question when it comes to tanking, particularly on WAR, but DRK and PLD input is also welcome due to wanting to become familiar with all of them.

In regards to Defensive Cooldowns, do you separate them all on your hotbar or are there any defensive cooldowns you just macro together either because they're more effective when paired with another cooldown, or are generally useless without being paired with another cooldown/ability? If so, which ones? Do you bother to put it on the hotbar anymore or just keep it macro'd?