Yeah I don't mind the fast spawns so much now. I did at first but I learned to kill better/faster so it's just more fun now with more adds and mobs to kill. I think they will scale it back once the populations settle down.
The thing I hate is when the mob decides he's done with your a$$whoopin' goes invuln and runs away with a full health bar. Usually this only happens on the hard mobs when it's really annoying to have to whittle them down again... ><
You know, I've always thought that just completely removing trash mobs from certain areas would be a good idea and make the game more enjoyable. The only enemies that matter are the ones around the various quests. But if I'm just traveling down a road with nothing of interest around, I don't think there should even be any bad guys. Just let me look at the scenery, you know?