Divine Divinity also used the "can't see the enemy's level without points into Know Creature" thing, including the journal stats. It's not an inherently terrible idea, but I'm not a fan of it, because for characters without the right points, it merely adds some guesswork and uncertainty.

If you fight something and lose, was it because your strategy was poor, or because you were severely outclassed?

You can see enemies before you engage them, and being able to see the enemy's level gives you a rough approximation of how tough they are. It lets you make an intelligent strategic decision on whether to engage them or not. In my opinion, replacing an informed decision with guesswork isn't the best idea.

Perhaps tie that to difficulty level or something?