It would be nice if you could change the door swing, angle or type of door without removing the door and putting one back in. This would be handy when you forget you have door style set to "overhead" and you put in a 3' wide OHGD as the main entry door! (woops!)
"Smart" doors would be a big improvement.
I recently created door symbols for the common doors I use on plans. I have saved them as both right & left hand and put this information into the dsf file so I can run reports.
This allows me to swap the doors by using symbol replace. Not a solution for your wishlist but it is an alternative.