Forgive me my bluntness, but I hope you realize how awfully egotistical this sounds.
There's literally no point in saying "they should've released 3 sooner", other than that we would've had the chance to enjoy Nimoy as Xehanort perhaps one more time. Which, again, is an egotistical thing to say. Not to mention how silly it is to blame SE or w/e for not releasing KH 3 sooner. It's sad that we won't be seeing him back as Xehanort but that's the hard truth.
Again, forgive me my bluntness but I feel like people are way too quick to forget the human being behind the artist.
You weren't blunt, that was the same thought I had and wanted t say such those words.