Ban is not a good method. Anyone can then register with a different nick and continue happily... IMHO, no criticism here intended, but it's not the best way to stop misbehaviour!
3-day ban is better. Uneffective to guys like me, with few access to internet, that post in mass and then stay days unconnected, but better.
That new option... It's a good possibility, as long as it is temporary. A skull in an Avatar fro a while is a good idea, I think. A new title would be good also good. Not banned, perhaps something you should be ashamed of.
A temporary banneing for more serious things (1 month, for example) could be also a good weapon to combat bad attitudes.
But to me the best option is still warnings. Whenever possible, try to get people to reason.
But that doesn't matter to me. I don't have even read the forum rules, since I decided to be a nice guy in such a great site, to have peace when I'm here. Peace and Love
Oh, and be more positive. Do not focus in bans, try to think on good things and no bad such as this (as in forum styles, great work here, in Dark Blue
).