In all honesty, the idea of Pets not having to trade off for PDT is a bit untrue, and a bit true... i guess?

Basically, the reason PDT is considered more of a trade off for players is because they have excellent gear choices for raw damage... Pets dont. Really when it comes to Pets, its between PDT, or... Nothing. So their trade off is 'less' only due to the point Pets aren't allowed access to the amazing benefits we as players get.

Though, I'd honestly settle for pets being added to Rolls/Songs, and leaving Pro/Shell all that jazz to whatever. Heck they could even make them like NPCs, where only >you< can buff them, making something like BST/WHM a good alternative in Pet-only battles, allowing you to haste, pro, and shell your pet... Its a sticky situation, but I still believe no job short of BST would run even the remote possibility of risking breaking it.

(Also, I did mention with PUP, that the price of the Haste attachment would likely crash as a result)