One thing that could be done to increase my pve enjoyment

Simply increase aggro radius and have mobs chase you immediately instead of just screaming at you. I can still gather up mobs when I want, but running through dangerous areas would be a lot more exciting if it felt like stuff was actually out to get me. Once I've actually gathered up a ton of mobs the combat is interesting. This simple thing would be easy to implement and help a lot I think. What are your thoughts?