First off, when he was still alive, MJ signed off on The Ultimate Collection, the OTW, Thriller, Bad and Dangerous special editions, and Thriller 25, all of which included unreleased material from each respective album's recording sessions (Dangerous ended up not getting the extra material but it was definitely planned for) and he did not go back and work on these tracks to make them "fit for release" before the they were put out. As a result, these compilations gave us a wonderful look behind the scenes of the creation of our favorite albums. I realize TUC was controversial due to MJ's problems with Sony at the time, and it can definitely be argued that he just "gave them" the demos to be done with them and get out of his contract, but
he still provided them...
And he probably knew we loved getting that stuff, too. The reason I think so is because Michael was a self-admitted student of everything -- he loved studying great artists, musicians, entertainers, movie makers, and just about any other professions or subjects you can think of -- so I would think he could definitely relate to
us wanting to study him and his creative process. And I like to think that, because of this, he would be OK with us getting this material. Especially as part of an album anniversary project like Bad 25, which is basically build around the idea and concept of showing us that creative process in all aspects of the Bad project, from the music to the short films to the tour.
So, yes, I love what the estate gave us with Bad 25, and I hope that future projects will follow this same concept. In my opinion it is much better to focus on his creative process and vision for the material he worked on during his lifetime, even if it means releasing unfinished demos, than to have other people come in and try to finish his work like they did on Michael. Because this way we get MJ, pure and raw and creating HIS music.*
As a side-note -- I have never been a fan of Thriller 25 and always wondered if it was a project that MJ was really fully invested in. But I don't know. Maybe I just didn't get it, or maybe I wasn't really part of its target demographic to begin with
* This is something will.i.am needs to realize by the way -- there is a BIG difference between attempting to finish unreleased material and risking it not fitting MJ's vision, and releasing unfinished demos and allowing his fans and the rest of the world to study and appreciate his creative process and genius. It's all about how you approach it, and again: Bad 25 did it right.