I had a neat idea for an addon recently called SPAS (yes, just like the shotgun).
Basically it's an addon that prevents hacking and stuff, while badspot finds a permanent way to patch up all of the backdoors.
Say for instance, someone is speedhacking while there are no admins on. SPAS keeps an eye on all clients; measuring speed, watching client-side scripts, and other stuff. If it notices something unusual/suspicious, it will ban the person and give an automatic reason and ban report (for the admins, just in case there is a misunderstanding). It can be customized to ban certain known hacks on sight as well.
I would do it myself, but I don't have that much knowledge in scripting. If someone could kinda team up with me and teach me whilst making it; that would be cool.