Hmmm I would say:
2 Discs or more of all unrealeased material,soundtrack, and tribute album contributions,demos,and studio outtakes from the Turbin,Belladona,and Bush eras
2 DVD's..One which details the bands history,can include Behind The Music clips and interviews with ALL past and present members of the band,including Turbin,Lilker,and Rob.The Other DVD could have rare vintage Turbin and Belladonna shows,Bush performances and TV appearances,like Married With Children and so on
A big booklet with never before seen pictures and thoughts by ALL present and ex members,plus family,friends,and so forth
Im not sure what the packaging would look like,,but Im sure it wuld be cool