I'm going to have to disagree with aggro mobs on the road. If I have somewhere I want to get to, I want to get there. If I want to fight, I'll run off the road and attack something. There should be somewhere we can be reasonably safe.

Off road, I wouldn't personally want it. I'm happy not having to dodge monsters here, and when I'm fighting something several levels over me, the last thing I need is an aggro walking up. The games current lag makes it unlikely I would survive. However, if a majority voted in favor of this, it wouldn't be a gamebreaker for me.

Nocturnal creatures sound interesting. I'm not into undead though. Never really understood people's fascination with it.