Jorbtar, would it be feasible to implement inventory-based speed to characters? I mean something simple, like this: the more equipment slots one has free, the faster one runs.
One reason I believe that would be neat is realism: someone carrying a b12, four water buckets, and a full armor clearly walks slower than someone with only pants and a shirt. But that would make combat strategies interesting as well, and I think it would minimize a few issues people have been complaining about.
For example, when aggroed, people would have to decide whether they drop all their gear for the attacker (so that they run faster than him) or if they will fight back. This would be good for raiders, who would get free stuff much easier, and it would probably make chases much shorter as well. The attacker could also decide to drop some of his gear to run faster than the target, thus leaving himself more vulnerable. Maybe that could lead to bands of naked people fighting each other so that they have the best speed possible, but that would leave them weaker against a fully armored third-party. I think it's an interesting thing to consider.
Another important consequence is that noobs, who can't fight, would have better chances of running away, so fights would happen more often between people who want to fight. More loot, quicker combat, less noob deaths - in my opinion that would be good for everyone.