pineapple... this is ridiclious

It's not hard to catch them in the act when you have all the info.
1. Write a little piece of code to scan game activity (they already have this that's why we get auto-banned).
2. Have it check for number of trade requests per second, chat requests per second, wispers per second, etc, etc.
3. Have it report every character that is 50x more than the average of all chacters.
4. Ta-Da! You caught them, now just type in their IGNs/account names into the baned file.

The GMs dont script whatsoever, thats still on the programming/developing side, GMs just use existing tools made for them.
Not saying its not easy, just not their job.