There are many ways to go about the movement of the PC's in your games, and one of them are the classic Diablo movments, which is also used in my other MMO's.
We are using pathfinding, and spawning an object for the PC to move towards everytime we click with the mouse. The PC's will also move around everything it deems to be a "obstacle" which makes it satifiying to watch the PC run around things in order to reach the point which you've declared.
I will leave a Cap.x File for you people to check out.
"Crazy is just another word for creative"