"which of these characters have 1)died; 2)been portrayed as incompetent; 3)been depicted as 'not right'; 4)deserving what happened to them"
How many times has Batman been portrayed as "not right"?
How many times has the Huntress been portrayed as "incompetent" or "not right"?
How many of the characters who died are still dead now?
I'm not touching "deserving" because . . . well, it's the most subjective, honestly.
Now, flip the questions around. Were these characters killed off, portrayed as incompetent, portrayed as "not right" etc, because of their economic background or "class status"?
NO!!!!
It was never because of economic background. Finding it to be so is like what Wertham did with Batman and Robin in the 40s or 50s (to answer your question about sexual interpretation and subtext--the subtext is unintentional at worst).