While I don't really think PLD is necessarily broken, it is less efficient in a lot of instances. It's really not that hard to run AV or CC with a PLD. My group does it in 18-20minutes with a WAR tank and I'm pretty sure putting a PLD in there would not change the finish time by much.
The scenarios provided often lack context. In a group of consistent players things are vastly different than PUGs. We can never forget that.
OP's ideas in inane as usual. We should probably stop falling for that troll bait.