I was doing some random arenas last night with pugs and I realized a glaring weakness of mine. I hesitate a bit when I don't know what target to hit in a team. Like I understand switching, that part isn't hard for me. But I see like a disc/DK team. I don't know which one to dig into first. If I face a feral rogue team, I have no idea who to hit first.
Normally I judge my first target by who has the least defenses. Or will be the most beneficial to hit. For example, If I see a warrior or an enhancement shaman I always go on them first.
Is there something I can do to know which target to start on first? Think this would help my preformance immensely.