Here's my ultimate gripe with the Estate & the powers that be at Sony:
Everyone always gives them hell over projects they could release but don't (i.e. an album of unreleased songs, restoring the short films in 4K, etc.). I understand the fans' frustration, but those things actually require time, money, manpower, and above all: effort. My gripe with the estate is that they can't even be bothered to do small things that require little to no effort at all.
Case in point: Thriller in 3d/IMAX.
In the past 3 years or so since it debuted on the big screen, they've made no attempts to release it on Blu-Ray or even put it on Youtube. You could argue that no one buys physical media anymore and that Sony would have to go through the trouble of packaging and shipping thousands or millions of units to stores only for most of them to not sell since it's a dying format.
HOWEVER, they can just upload it to Youtube for everyone to see, and they easily can do it RIGHT NOW. The arduous 4K restoration process is already done and they can just upload the IMAX version to the official Youtube channel anytime. But they can't even be bothered to do that.
THAT is what irks me about the management of MJ's Estate more than anything else; it's literally the little things