@Zenith2292: In the base game, after you've completed a certain number of low-level zones, whenever you enter any other low-level zones, you get a dialog like the one shown in the picture above, to the effect of "This zone looks really easy. Wanna skip ahead to the last level?" This addon suppresses that dialog, so that you stay at the first level of the zone when you enter. It's a bit of a holdover from earlier game versions that didn't give you a dialog but summarily rushed you ahead to the last level of low-level zones without asking, and this addon prevented that.

I don't quite understand what this does. Does it automaticaly teleport you to the top of the tier 1 dungeons?

Shouldn't be. Even if it throws you to the bottom of the dungeon, you can still walk back up the stairs to go to the skipped levels, and you still get the escort quest. You'll just be doing the floors backwards.

is this mod necessary to get all 9 escort quests?