For New Order, I'd like to see the Technique Definitive Edition soon (take my money! etc), which I assume will also cover off World In Motion. It would be nice for the Definitive boxes to stretch beyond 1989, but as the artwork concept is drawn from an original Factory idea, I sort of doubt that will happen. Also, the later albums are clearly not as well loved as the earlier ones. I imagine it will be difficult to squeeze stuff out of the vaults for a full Republic box beyond remixes, but at least we got the decent Hi-Res remaster of the main LP in 2015. I'd love to hear the original Hooky/Stephen/Gillian writing demos before Bernard rejigged them, but all of them seem to hate talking about that period so, chance would be a fine thing...
For the 1993-2006 London/Warners years, which after all is 3 albums plus Lost Sirens, a single box-set encompassing everything plus discs of rarities/choice mixes might be the most viable/cost effective option. The main albums, B-sides (not many), choice remixes and perhaps even the full Reading 93 & 98 shows. There's got to be a Get Ready/Siren-era show (besides Glasgow 2006) they could dust off for inclusion. Just make it a real celebration/consolidation of all things New Order 1993-2006 in one place. As mentioned, those albums are clearly not as well loved as the Factory ones, but in my opinion they should still have their place in the sun. From what I understand the publishing and songwriting arrangements were considerably more complex after the Factory years, so that could be an impediment to someone trying to put that box-set together. Who knows? Recent interview quotes from Hooky show relations are still chilly-to-absent.
Joy Division, what is seriously left to reissue? Heart & Soul, the 2007 Collector's Editions and recent remasters adequately put a full stop on things. Even the RSD 12" from 2011 gave us JD's version of Ceremony, which for years fans never thought we'd get to hear. "Everything else is merchandising of memory" as Saville put it.
Side projects-wise, I think we've got everything, so bar new music, everything is readily out there on the second hand market. I doubt there's the financial appetite for reissues from most record labels. They barely got stuff out in the late 90s, let alone now. Electronic, O2 and Monaco all had their albums released on vinyl recently, so that's been ticked off the list.