Metallica- Self-Titled / "Black Album" box set potential contents

I know we probably won't see this until about 2021 for the album's 30th anniversary, but I thought I'd start a thread on the (probably) upcoming Metallica self-titled album / "Black Album" box set.

What would you like to see on it in terms of the extra audio / video goodies? I want to hear whatever early demo versions exist of the songs and any non-album B-Sides or songs that were recorded for the album but discarded.

 

Besides the demos already used on B-Sides there must be plenty of alternate takes.
Milton Keynes UK June 5,1993
Complete Moscow`91 largest audience 1.6 million people.

 

I'd love for that Moscow show to be included! Has the whole show been released officially on video anywhere yet?

 

The entire thing,video and audio has circulated for years on the net and trading circles.About half of it was used for B-sides and videos.

 

Since there is already a surround mix I wonder if it will be included.