What do you think about eliminating a character from a book without killing them (e.g. they fall into a coma or run away)?
I think that removing a character without killing them can make things more interesting. Even if a character runs away or simply just slips away into nothingness, it can still leave an effect on characters/the reader in a somewhat similar way like a death. Now this may not really deal with the question, but I believe there are ways to "kill" a character without necessarily killing them; I really do like when it happens in books and shows.
What do you think about a character who was seen dying, given a funeral (even if no body was retrieved), and then coming back a few chapters later?
Thinking about it at first, I do not really like it because it has been done so much and is very predictable. Now there are some cases where a character does die but then they come back later on and it is pretty interesting. Sometimes it is confusing, other times it is interesting. It really just depends on the who, what, when, and why if that makes sense.
Do you pay attention to deaths of male and female characters being even?
Yes I do, but not necessarily in numbers. I tend to look out for who it is that dies, the matter of deaths, responses to them, and such; especially if it is characters who are female, POC, part of the LGBTQ+ community, and disabled. I really only catch on numbers if it is a certain group of people dying disproportionately.
What do you think about characters dying an unexpectable death (e.g. in the middle of their redemption arc)?
Unexpectable deaths make stories more exciting and shocking, or at least in my opinion. They evoke more emotion in the story and the reader. When it comes to a character dying in the middle of their redemption arc, it makes it even more sad because they were so close to redeeming themselves and achieving their arc, but then they are not able to do those things because they end up dying. I like them despite them making me upset most of the time.
How much should a death affect other characters to be called "good"? Can a death be good if it doesn't affect others at all?
The degree of how much it should affect other characters depends on the situation and what the other characters are like. It can take a mental toll on others, it can affect a mission that the rest of the characters are on, and it still raise tension in the story. There are ways that it can affect everyone else without anyone (in the story) knowing. A character's death can affect others at a big scale or it doesn't have to at all. Sometimes it is good that a character's death has no affect on anybody at all, but it really depends on the character that died and the others who are alive. It can show what that character meant to the others and the story's plot.