Straighforword 3D full movment view is my first and always choice, like in Far Cry, I HATE isometric and the cam controls in NWN2 are some of the hardest I have ever encountered, but i hasten to add all this is my humble opinion.
Re KOTR III, I hope somehow it will happen someday, sooner than later. As engines evolve so does the potential for another blaockbuseter wonder of a game, like both KOTR I and KOTR II are each in their own way.