Also, how does one of the cannon team members make it all the way up the tower in time? I would have one of the 3 DPS attacking the dragon go and man the dragon slayer after the first set of canons go down. That way you don't have to do the "activate > sprint > activate". Each cannon person can do his/her own snare. Maybe I am wrong, but the one time I had to run up the tower it seemed like a long ass climb. Just a suggestion. It seems plausible. If it works, it will be the new standard IMO.

Also, how does the healer/tank grab aggro from the big mobs, I thought they didn't have an aggro table?