As a player who plays controllers 95% of the time, I absolutely LOVE tanks. I have to say, i'm very surprised by your issue. Consider the tank your best friend. His/her friendship should be #1, and you should listen to his or her requests/directions. He herds them up into a big pile and then you step in to lock-down and slowly degrade the herd. He/she is actually going out of his way to make your job easier! When done correctly it's a beautiful thing. And if you ever find yourself struggling to find a team, (which can happen quite often), consider searching for a tank or brute to "duo" with. You would be shocked at what the two of you are capable of!