Yes, this is right, if the game does not disallow it, then it is a valid tactic. Obviously when playing a game one will try to play as well as possible within the rules. Which is why is should be prevented since it makes some parts of the game cheesy. Both from being too easy and from being "unrealistic".Zonk wrote: Also, I don't see why, in your pros and cons you keep calling this an 'abuse' or cheating.
The point of a change would be to turn this from something 'fishy' or 'cheap'(I don't think it's proper to call it cheating, as the game lets you do this by default, and doesnt' even suggest you should avoid doing it) to a valid tactic.
Tactical retreat SHOULD be a viable option, although with possible downsides. Monsters following would be the main one.
Monster following seems fine to me. Going back to old level already gives you many advantages. A fully explored level where many monsters have been removed (although there may be some new random monsters). If the following monsters only appears when they would reach the stairs then you will be removed from their line of sight until they appear which means they cannot use distance weapons and you will have fewer monsters to deal with until those further away from the stairs appears.
Typical scenario: you go down some stairs and find yourself in a situation you cannot deal with or flee to the stairs from such a situation. You use the stairs to go up and then use a phase door/teleport scroll in order to get away from following monster if that is a problem.