One of the lame things about Oblivion is that mostly I can lure monsters into town and let the guards kill them. I can clear out dungeons that way that normally I could not. Is there some kind of mod that gives creatures enough intelligence to not follow you into town? Or some other game mechanic that prevents this? Maybe it would be as simple as dungeon monsters do not leave their dungeons. Does anyone know of a mod that solves this?

Another solution I thought of is if there was a mod that prevented creatures from entering certain cells, like towns. So when they get close enough they turn around.

Mostly I'm curious if there are any mods that do exist for this purpose, or if not if there were a feasible solution. Thanks.

I'm not sure I understand. If you don't like this, then why do it?