The decisions on what go on these reissues are purely based on business considerations and don't have a lot to do with fan wish lists. For that reason, I doubt there will be a separate Zooropa release. I guess anything is possible, but if they were going to do that I doubt they would have included it in the AB reissue. I guessing U2, their label, etc. just don't see a large enough market for it. And it's hard to see any scenario where they'd put any work into a reissue of Passengers.
I'm sure Pop will get a reissue, but it's hard to imagine U2 doing much with it beyond that. I think the time for re-recording, remixing, "finishing" it, whatever, like they talked about once upon a time has passed. I doubt the band is that interested in revisiting it at this point. I'd guess we'd get a 2 disc set composing of a "tweaked" version of the original, plus a disc of b-sides (including the new versions of some songs for the 90/00 compilation), and they'll inevitably throw in Popmart Mexico City as a "bonus".
R&H I can see getting a bit more work. Despite the supposed controversy surrounding it, it was a huge selling album at the time and very popular among U2 fans and the general public. One thing I'd like to see on a reissued/remastered (I'd guess this one is a good candidates for remaster) Rattle and Hum is a separation of the live and studio material into two separate discs. There's a great live album in there, and a great studio album, but I always thought they could be better as stand alone pieces. Just add some of the b-sides and unreleased stuff to the tracks on the existing studio recordings and you have a great "studio" album IMO. Then for the second CD just put on ALL the live songs from the film. Call the studio disc "Rattle & Sun" and the live one "Outside It's America". Throw in Lovetown as a 3rd CD, and you're good to go. For a DVD, a high quality video of one of the Lovetown shows (if there is such a thing) would be most welcome as well. There's your 4-disc set.
But again, that's just my wish list. More than likely we'll just see a reissue/remaster of the original release with a disc of b-sides. Sigh.
As far as the film goes, even though they were marketed together and it's normal to associate them w/each other, the R&H album and movie are two separate properties. I read recently that they had to get permission from Paramount to use some of the R&H outtakes in Gugenheim's doc (though apparently U2 does still own some of that footage as well). Whether as part of a R&H reissue or a stand alone release, I'd love to see an expanded/restored R&H movie (and it sorely needs restoration, and at a minimum a new HD transfer), but unless U2 wants buy back the film rights from Paramount (and movie studios don't give up properties easily or cheaply, especially when they know that U2 has deep pockets), that's not going to happen any time soon.
And my prediction is that will be the end of the U2 re-issues in CD format. I think ATYCLB and Bomb will eventually get "deluxe" reissues, but probably in a digital format. I actually believe the entire back catalogue will be remastered again in 96khz/24bit for digital release at some point.
What I'm wondering about is the timing of these releases. U2 notoriously doesn't like to "look back" and I'm not sure when they'd think would be an appropriate time to put those records back out there. Certainly at this stage of their career I don't think they'd put out a reissue so close to a new record, so I think that will be the determining factor on the timing of any reissues.
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