Mxy, you're approach is pathetic, chaotic and not at all interested.
What you're suggesting is that if a writer wants to ignore Gwen Stacy dying he should and continuity be damned but then another writer could come along and ignore what the first writer did and make it so Gwen's dead again.
Historically speaking, every time that approach is used in comics it ends up making for the worst kind of stories, the least memorable ones and the ones that others come along to fix or downright ignore as if they had never happened.
I prefer Mid-Nite's approach of not ignoring and instead addressing.
Like Ennis did with Punisher.
He didn't ignore the previous mini series, he addressed it in a very characteristic way; Punisher gave both Heaven and Hell the finger and went about his life, the end.
That's the best kind of approach a writer can take.
Incorporate what he wants to do with what came before, not just ignore it to feel important or to please some whinny readers...
Comics are like a Rorschach test; everyone has a different opinion on what they are and can be...