I've little time right now to make the long answer I'd like to, but remind me to do so at the end of the week
I *plan* to write other tutorials, no problem, but what I lack currently is time. Argh. Time. The navmesh tut is intrinsically "finished", though... since what it lacks is more relevant to "pathfinding" (with A*) and "pathwalking" (with algos I'm currently fighting against, grmbl).