There will always be a natrual fluidity to the scene, it's the nature of that beautiful beast we call techno-sure we can hark back to this that and the other but by it's very nature it is going to evolve, some may like a certain direction others not, but the fact that it is evolving is the most important thing
we can get all post-structuralist and seek the "meaning" of techno, but in reality there are so many inter-referential meanings in "techno" that it becomes a self defeating exercise....listen to the music mmmmmaaaaannnnn!