Hi !
I just started playing the game and I am having so much fun.
While trying to change rearrange my vault I got the message "You can′t destroy this room because it is connected with two rooms" but then by looking through forums I found out that if the other rooms are connected to an elevator, through a second row of elevators for instance, you are then able to delete rooms even if they are connected with 2 rooms.
So I think it would be more precise and less confusing for players if you changed the statement:
"You can′t destroy this room because it is connected with two rooms"
For something like:
"You can′t destroy this room because it will left other rooms isolated"