In Death of a Salesman, what harm and what good does Willy's death do?

I have changed your
question as it asked more than one question. The part of the play that you would benefit from
analysing is the Requiem, the last section when the characters are together after Willy's
funeral. It appears the impact of Willy's death on his family is overall negative. Linda in
particular has problems understanding Willy's motives for killing himself, and dwells on the
good times. There is a harshin the fact that they have just finishing paying off their mortgage.
Happy intends to dedicate his life to...