A suggestion for changing the paladin would be to get rid of the spellcasting. Use some of the more iconic spells that the paladin had, but turn them into the higher level abilities for the class.
I'd also like to see more smites per day. Or, don't have the smite attempt wasted if the paladin missed the attack.
Hmm... now my mind is pondering these things. I'll have to write something
up and post it this weekend.
-garth