I really would just like to see BBcode come back. Some people mentioned buttons to apply things like italics and bolding, that would be nice and I seem to see those a lot on other sites. Also, colored text would be wonderful, I miss that so much ;_;. 2nd to bbcode, I would also really like post preview to come back, I don't like my posts having mistakes. 

As far as deplorable characters go, I once had a blood mage that would only perform rituals on young girls. He would lure them and then peel all their skin off to eek the screams out, then he'd cut both their thumbs off and let the blood drain onto the summoning circle that would turn the blood into blades that would dissect the sacrificed individual. 
Hey, if you want players to hate an antagonist, you gotta make them bad :D