Heyo,
I’m curious if the Optimizer takes the 4P for Protection Paladin into consideration, as it doesn’t seems to advise it. I took a look in the TheoryCraft wiki, and the 2P looks implemented:
However, the 4p seems to still be a placeholder:
It is implemented - you can see a trigger for it on the Judgment spell.
It’s mostly an offensive set bonus (a really strong one at that) - so as you move the gearing strategy slider more towards offense, you will see the set bonus picked by the optimizer.