The player will still know the level and amount of hp when trying to attack. Why complicate the task?
Because it's a matter of presentation and of internal coherence. Not of "knowing" or not.
Why is a level 1 red dragon flying across the sky in Hell and why is a level 4 Red Dragon escorting the Gith patrol? What next? A level 8 Red Dragon in the next area and then a level 14 Dragon that you will actually have a chance to fight later on by the end of the game?
Is it really too much to ask for some internal consistency?
Is the point that are trying to make that everything we'll ever see will be constantly labeled in the same level range of the area we are exploring? Then what do we need these (misleading) levels for, exactly? To gratuitously break our immersion in the setting?
