| > In the series Buffy the Vampire Slayer series, she has a sister introduced in Season 5. This changes the characters memories of what happened in Seasons 1-4. AFAIK we've never been told what the characters believe happened in those seasons. I still enjoyed Season 5 though and well parts of Season 6 and 7. |
I've never watched Buffy so I can't compare the situations. I guess it would be theoretically possible for me to be okay with a scenario that alters characters memories, but the problem with the Spider-Man continuity is that so many stories had somebody's knowledge of Spider-Man's identity as an inextricable part of both plot. Also, Peter's personal relationships with both friends and enemies is now so completely different in light of them not knowing his identity, that previous encounters are now null and void.
Incidentially, to compare it to a TV show I have watched, Smallville now has the same problem. Chloe has been mindwiped of Clark's secret, which means she has radically different memories of the last four years, yet she still remembers being in all kinds of perilous situations. But then again Smallville is notorious for asking viewers to not think too much.