First the Lore issues.
1. Path of Light is a MONK thing, in the Lore, it has nothing to do with Paladins.
2. Monks get KI form long hours of study, not a "gift" from a god. Even if a paladin followed the path of light, they would not get KI.
3. The fighting style of unarmed combat is through the same training, not a gift from a god. And since the Monk lost the increased damage dice, the paladin gets the same for free.
Giving paladins KI and all their paladins stuff, is messed up.
I played 3 lives as Scared Fist.
They took everything, that made a handwraps monk cool, and gave it to the paladin, but kept all the good stuff for the paladin also.
Path of Light/Sacred Fist, should have been a Monk archetype instead of paladin. Or a universal tree.
In play they get so much the Monk should have, such as whirlwind attacks in the enhancement tree.
Instead of giving Path of Light to the Monk, and making the handwraps Monk better.
They made Paladins be better handwraps Monks, then handwraps Monks themselves.
You can be a better handwraps user playing Sacred Fist Paladin, then playing a Monk, and still have all the good Pali stuff.