I would vote for a system in which you can turn off "level" indications of enemies.....personally, I would rather learn it the "hard way". Or how about a certain character trait which let you assess the strength of an enemy but only by a small "text message" an not contantly on screen with a different colours or numbers? Just a message like "This orc chief looks pretty powerful. It might be a tough decision to fight him." if you click on an enemy and use the skill (which could also have limited uses a day/until resting).
