Back to the original question...is this the end? In my opinion, yes. I no longer care if course creator ever becomes a reality in GT6. There will be no more tracks, and other than the balance due on the VGT cars, we can expect no cars in addition to those. Yes, we've been given free stuff, but not totally given what was advertised at initial purchase. Let's face it, we're deep into the life expectancy of GT6 and simple logic would dictate that nothing else should be expected from it.
With that said, I have zero hope that GT7 will be much different. The car list will be outdated at launch, features will be incomplete, and everyone will have moved on to another form of car/racing game because they're just tired of the same old broken promises. For one, I plan on GT6 being my last stop for the series.