Has there been a thread or repository where we notate important Marvel continuity shifts?
This is not including Retcons (Jean Grey / Dark Phoenix), later reveals (Daredevils' Stick), between-panel-updates (Sind Past) - and certainly not wholesale universe reboots.
Rather, this would be creators coming in and specifically changing major events, story backgrounds, etc ... without a clear explanation.
Some examples I can think of:
- John Byrne's Chapter One stories (Could have been easily dismissed as an AU miniseries, had it not been tied into 616 in the ASM and PPSM series).
- Spider-Woman Origins - completely changes SW's origin, parents, etc in more than just a 'reveal'.
- Reginald Hudlin's Black Panther - known to have massive unexplained continuity changes when published in 2005.
- More of a sliding timescale deal, but wasn't Iron Man's origin retconned at some point to taking place during the Gulf War? Regardless, it is now firmly established as happening in "Sin-Cong" along with any other character that fought formerly in Vietnam.
Any others that I'm missing?