I have heard from a lot of people that they were shocked that they killed off Susan. What's the big deal? What if Susan was a character that had never appeared on the show but was occasionally referred to as George's dead ex-girlfriend? I'd wager no one would even give it a second thought, then. That is why Seinfeld is such a wonderful show. It is completly REAL! I enjoy the aspects pointed out on Seinfeld that relate so closely to our own lives. Death is a part of life. Sorry Susan.
My 2 cents...
Benjammin