i'm not a dreamer thinking that impossible features could be added only 8 months before games are released, though this feature seems not that hard to implement whilst making a huge difference for the gaming comfort of us players
EDIT:
maybe it's time to give an example of a possible scenario:
1. you enter a huge cave, let's call it the dragoncave, it's added to your map...on first sight there's no problem and no need for subtle doorknob changes (or any other door system for that matter)
2. so you're deep into that cave when you realize you urgently have to attend some other business or worse; you're over-encumbered and have to get home to swap some things
3. time passes and you forget about that cave (one of the 130!!)
4. weeks and caves later you look at your map and you see that you're already been in the dragoncave cause it's on your map...except you haven't finished the cave and who knows what great things you're missing out... (and yeah...of course it's not a problem to keep track of a few huge caves...but it's something else to know exactly what happened in all 130 caves over the course of a few months! ...and that would be only for the caves...)