First where some minor bugs in the way I did the pathwalking stuff and the core waypoint system, guess I was tired yesterday! But the main issue though was in the way I handled transformations per node. Up until this feature implementation, nodes hadn't had any need for local transformation displacement from their parents, so having only a global matrix had worked. Now I needed to seperate into a local and a global matrix :P The reason I didn't see this immediately was that the pathwalker component was translating it's game object, while the actual graphics I was seeing on screen representing the game object is located in a child node of the game object added through the MinionView component.
Finally I can move over to reimplement the collision system and get tower meshes in there!
