something that i consider is that any law in the right circumstance is unjust because exceptions to the rule always occur.
What do paladins do with laws that are just 90% of the time? What % of justice is required before paladins just up and say "forget this law, its not good so i'm not going to obey it because it opposes good?"
And why can't they do the same the other way? Why can't they say "forget this good, its too chaotic so i'm not going to obey it because it opposes law?"
Promoting social order (to use an example throughout history and fiction, that aristocrats have more legal rights) should be as important to a paladin as promoting good.
ie. paladins should work to promote both situations equally. The typical oppresion of a peasant is "good", but a harsh and cruel lord should be combated, either legaly, socially, or physically.
Most paladins i've seen are simply extensions of what a modern western world considers "good" and not any form or fashion a consideration of what the fantasy world the PC is interacting with considers good.
joe b.