I had figured that I'd watch the Groove3 X3 videos when I update, but just watch the chapters that applied to the new stuff in X3. Not sure why people are disappointed that it covers much the same ground as the X2 course when you'd have to learn that same stuff if you were learning X3 from scratch. And it's not as if they've reused the same videos, they've all been done afresh. But what kind of different stuff were you expecting to find in, say, the piano roll video?
Agreed, if I'd purchased the X2 course then I probably wouldn't buy the X3 course because of the similar content. But since I have a Groove3 subscription then of course I'm going to take advantage of the new stuff.