Guards should able to guard door on blocking direction. Preventing manipulation
of door, if not on guards friends list (or being owner of the door being
manipulated, if door gets ownership feature)
Now having blocker guard for door wont do much good. You get \'free\'
lockpicking on it, even guard blocks movement later.
If guards wont completely block manipulation, there could be more or less
random possibility that guard will interrupt lockpick attempt, and causing
lockpicks to break,aggroing player or just plain tossing player out from pcity
instantly after entering room for some 30min-1h perioid.