This mod increases the amount of enemies that can follow you through a load door in combat and decreases the fade in/out time of actors going through load doors.
By default only two actors can follow you through a load door in combat. That is a(nother) nice little exploit you can use to defeat large amounts of enemies. Six marauders at once are too much for you? Go through a load door! You should be able to handle two of them at once. When you're done heal yourself or maybe even sleep for a while to regain lost health and magicka before you lure the next two guys into your death trap. That is just silly. Now up to six actors can follow you through a load door instead of just two.
I also noticed that the fade in time for actors after going through a load door is quite long (1 second to be exact). During that time they're unable to move or perform any other actions which basically means a free, unblocked power attack for you. I decreased the fade time to 0.5 seconds so you still see the effect, but you will have less time to land a free hit.
= Installation =
Put the PTDoorExploitBegone.esp into your Oblivion/Data folder and check it in the launcher.
http://www.tesnexus.com/downloads/file.php?id=32027