Honestly, the tanking companions irritate me a hell of a lot less than scatter-happy wizards. I get everything lined up for the old earthquake, then a freaking idiot tifling decides to go bowling.
Can you also give the OP his own forum, that only he can see and post to? Also,take a way his access to all other forums. I don't want to sift through his arrogant "thoughts."
So far, I hit "Tab" until I see the blue mark icon appear on the enemy and only use Guard strikes from that point on. If you're in the middle of a swing when you hit tab, the mark will only stay up for a second and vanish again. It's a pain to get the hang of.