It seems I have all of Crisis but only some of Deadline. It looks like I began losing patience at aroundabout #19 and was firmly committed to missing most of it by about #40. The last issue I have is #71 but that follows a colossal gap. I've not looked inside either of these yet; my recollections are somewhat angry. I have Revolver, of course, and some randoms like Creepy (Italian horror reprints).
The 2000AD run is from 1987 to 2006, but not the acreage of paper that implies. For quite a few years in that I was either too poor to buy a weekly comic, or too disorganised to hold onto them. There was probably even a time I was too embarrassed.
That's it, anyway; and all that remains is the final winnowing; to the shelves, Banbury Oxfam (which does comics), the blue bin.