My issue is that I think Alignment should be fluff.
More expertise dice. I'm out.
If it makes so much sense to implement Monk's abilities via Expertise Dice, why don't they make "Monk" a Fighter's Fighting Style (and "ki" a theme/specialty)?
And actually I think the whole idea specifically that Monks are Lawful is WRONG. It might be true that being lawful helps with self-discipline, but they are NOT the same thing!
Alignment is social, it doesn't make sense outside relationships. Law VS Chaos is either about society or the universe as a whole. This can have an effect on the relationship with yourself (thus self-discipline) but it's just not the same.
It's perfectly possible for someone to be totally disciplined when it comes to training yourself, and then harboring very "chaotic" feelings towards society even to point of desiring to take the authorities down. Just think of how many terrorist groups are extremely disciplined in their trainings but their overall purpose is not at all "lawful".
And even if that is the norm, I can always think of a way to explain why my character is different. This is why I hate alignment restrictions so much. They are a barrier to roleplaying and good storytelling.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.