I think when Miro was still actively producing, his work was among the best on the scene. It was the main driver of success of Affect3D website. However when I look at his past work in the current day, there's a lot of artists producing comparable or even better quality (usually much shorter animations, but the quality is there). Since his work now takes 2 eternities to produce, when (or if) it finally releases, it won't even be as breathtaking as it used to be.
You can call this "The Half-Life 3 effect". The past two games were absolutely revolutionary for their time. Everyone wanted that sequel so much, but now so much time has passed, it'd have to fulfill some absolutely unrealistic expectations.