So you make a pet class into a tank but puts minimal focus into the pets? Why even bother then? I'd rather see a BST that is 50/50 on character and pet and have their own dual tank dynamics either through damage sharing, transferring damage to one another, aggro swapping/transfer, etc. Something like the BST tanking all the boss auto attacks and then tank buster comes, the BST calls on his pet which then rushes in front of him and takes the tank buster instead, enters a weakened state, BST takes over again who then proceeds to tank the boss like normal while using skills to get his pet ready for the next tank buster.