I agree with the majority of voters. No changes.
Maybe make the Monk any non-chaotic.
But I completly disagree with those here that think the classes with flavor should be stripped down into generic flavorless cardboard. Well, they didn't put it that way, but that's the impression I got.
D&D has a very strong "implied setting." There are elves, who are great practitioners of magic (prefered class: wizard). There energy weapons that cut through armor (brilliant energy weapon mod). There are gnomes who are known tricksters (prefered class: illusionist).
There's a goodly bit of flavor in the PHB, and DMs can play that flavor down or up, or excise it, as they see fit. Hell, Monte Cook's Arcana Unearthed is designed with the idea of "what about a PHB with completly different flavor?"
The Paladin is part of that. So is the monk.
Pallys are holy warriors who follow a strict code of honor, making them LG by definition. Any other alignment doesn't fit the flavor. You can have holy warriors of other alignments, but then it's not a paladin any more.
If you want to remove all of D&D's "implied setting" as Mr Cook calls it, you're going to need to strip a
lot more than a couple classes.