I'm only going to hit on basically one point. You want people to be locked just for having warn, but warning and trading are really irrelevant. If everyone who spammed once in a while and got warned couldn't trade, there may as well just be one section for trading.
Also, if you want it to be "nearly" zero tolerance, then you'd be facing this:
http://forums.d2jsp.org/topic.php?t=24548655&f=258 -- You didn't post the suggestion right, should you now automatically be bumped up to 30% so you understand what you did wrong? Or would a simple thread close suffice? I know what you're getting at, you want there to be less obvious multis. The problem is that while they may LOOK obvious, they could just be another legit person who wants to spam a site. Sure, harsher punishments are nice, but they can't be TOO harsh.
I'd also like to point out that for people with warnings, there are small things that happen that are more irritating than anything. Longer waits between posts, longer waits between pms, less access to subforums, etc.
This post was edited by PanikingDisco on Jul 14 2010 04:22am