I was actually going to try to work something out for the advance duplicator for URS. I'm not even sure how to go about it yet. I'll see what I can do soon.
As for the E2's... there was a script on gmod.org that could block certain E2 names. The only other thing I could think of is searching for a specific string inside the E2's code. Like credits or something in that area. I'm not committing to anything, but if I have time I'll look and see what I can do.