I actually got a chance to do a bit more than just mess around with creating characters and playing in the first city. One thing that I noticed very quickly is that you get a rather dismal amount of experience from enemies. I was killing them as a chance to get used to my abilities more, but I was getting maybe 2 experience each. I ran into a few fancier mobs that had more health and did more damage, and those gave me more experience, but still not enough (around 80). I though that was a bit disappointing; I didn't want to only grind enemies, but I don't want grinding enemies to feel worthless either.
I'm kind of still in a bit of an explorer mode as I'm not necessarily paying a ton of attention to quests, but enjoying running around a bit. I have noticed that enemy aggro is a bit odd. Creatures will aggro you, but in some cases, it takes a while for them to aggro, and in other cases, it's nearly instant. (This is for the same type of enemy.) Humanoids don't seem to have this problem as they aggro immediately.
Although, I did notice that the game seems to lack something of a threat table? Or at least it doesn't handle it the same way as other games? For example, someone trained through an area, and destroying that stream of mobs looked like a ton of fun. So, I attacked... but some of the mobs that I hit still kept following the person that ran through. There also seems to be a bit of a stricter leash on mobs. I was gathering up some mobs to dispatch, and even though I hadn't gone far and I believe I had hit each mob at least once, I had a few run back to reset.