A bounty hunting role:
if someone is wanted for Thievery etc (since theres no PK) you can kill them or bring them in alive for a reward. I think that there should be maybe a jail or something like that if your caught as well, maybe not a jail, but maybe one of your skills can be taken down depending what your offense was
also
You can have a reputation: Angelic to Chaotic
the lower it is the more NPCs might like/dislike you (depending on their alignment) and in local NPC shops, items can cost more money if your evil than it would if you were Angelic. Also, armors and items and weapons can give off special effects if your a certain alignment:
for example
(my name for fighter so dont steal

)
Ajaxx\'s Sword of Choice
STATS HERE
either the sword can tell what will happen or itll come unexpectedly for example:
an angelic puts it on and gets +20 to max mana or life
a chaotic puts it on and it raises his strength or something like that
also, if your neutral there will be additional raises and such!
my 2 cents