I get what you guys are saying, but hear me out for a second.
I can only compare these kind of things to my love of Star Wars that started when I was about 9 years old. I didn't have any friends back then, so I ended up watching the films all the time, and they made me feel like I wasn't alone. They saved me from being a lonely, depressed kid. Now, as an adult, when I watched the new films, I absolutely LOVED them, but they weren't the same thing. And you know why? Because it had already happened. Those old movies had already saved me.
That's how I see things with X Japan (and pretty much the rest of this fucking universe too...). The documentary is fantastic, but their music has already given me so much, that I can't expect a documentary or even a new album to give me more than that. I'm probably going to love the hell out of everything they'll ever do, but music has already saved me. It'll continue to do so, but the magic is not going to be in this
one thing that they release. To me, it's in everything.
I'm just glad that they can reach more people that might feel the way I do about their music (or just music in general).