I would also like to voice my support of the following (in light that this book attempts to eliminate the need for prestige classes):
1. Paladins receive good Will saves in addition to Fort saves. They did this with the pious templar (3.5 paladin the way it should have been after 4th level) and i think it works well.
2. I really like the Smite Damage going to 1d6 and increasing at 5,10,15,20 (much like a rogue sneak attack progression). I also like it effecting Chaotic as well as Evil since a paladin alignment is opposite on both. Giving it the ability to be good & law aligned is also important. For instance i was playing ravenloft the other night and the paladin's smite attack does nothing special against undead with resistances even though it is granted by the paladin's god. I have to disagree with the idea of a paladin doing extra damage constantly to evil/law though. Otherwise what is the smite for?
3. Allow the weapon/mount time of use to be split up (see the disarming argument). If i was running a campaign with paladins in it, i would make my evil baddies disarm them all the time because in a world where that mechanic was in effect i would think evil forces would train their combatants to do that exact thing.