I think the only thing worse, and more insulting to fans, than the revolving door deaths the industry is a fan of in the last decade or so is when the company hypes a character death ... and it isn't one.
Let's look at some recent Avenger deaths.
Hawkeye - BLOWN UP!! later "undone" by Chaos magic
those are deaths.
Jack or Hearts - BLOWN UP!!
Ares - TORN ASUNDER!!
Human Torch - fighting bugs... ...
No corpse = no death.
Frankly, every time a character dies, I'm extremely offended. It doesn't matter how "good" they try to make it. They're never good. The only reason I'm buying the damned books it to read about the characters cheating death. To read about them dying is like a punch in the face.
Thankfully, there's always resurrections!!!