I also don't believe we will have a superbox like the others, but maybe a mini box? (if that exists)
1 - I can watch a DVD with the complete Roxy show + the "making of" with more exclusive images of the band in the studio and rehearsals
This would fit perfectly on a DVD.
2 - a vinyl and a CD with perhaps some alternative version of a song, or acapellas and instrumentals too.
3 - a mini book with more exclusive photos of the band and also the performances.
If we are to consider an era of CC we have from 2004-2005 there were only 3 shows Roxy04, MFR05, Live 8 (we also have a small appearance by Jay in a PR04 show.
Now if none of this happens I would be satisfied with a QA with the band talking about the Album and after the Full presentation at Roxy 04 I would be super satisfied.
If something is going to happen for CC20th, we will only know between June and September.