How about just reducing the xp penalty for some under-loved alignments, like Chaotic Neutral. Seriously, who would EVER pick CN? The xp is so bad that LG and LE characters can double their xp rate over them. Also, should make it so DKs can only be LE - if you pick any other alignment you can't do the quests you need for legend - so why even have them as an option?
Obviously there is some balance to alignment stuff. Paladins get huge xp buffs because they have to be very careful at low levels not to kill anything good-aligned. But neutral characters get beaten by every branch of the ugly tree when it comes to xp. When the neutral in a goodie group is only level 21 while everyone else is level 25 it just doesn't seem balanced.
Yes, there should be less xp for neutrals - they have more options for what to kill - it just should not be quite as prohibitive as it is now.
