I think I'll only comment on the new/changed abilities. The swift action call for the mount is nice, and makes it much more functional. The Righteous Cause series is pretty underpowered... To specific to be useful. Flavorful, but I don't think it helps the Paladin very much except to cement itself more in its current tier. However the new code is much better, and the spells are nicer. Oh and the per encounter for smite is very good.

I think that the class still needs a few more powerful abilities to boost it up to be on the same level as a few other of the holy warriors on these forums, but not that much.