The existence and meaning of this word can help in the make of this movie or sequel explanation...hopefully new part 2. Very brief scenes on Krypton in progress before/during/after the incident. What exactly did they do to blame. A sort of flashback memories, no real need of constant dialogue. I cannot remember this been done before but it shouldn't be challenging.
Death of Superman
Native scientists created this creature (Doomsday) for defense just like the atom bomb against whom? So far we know nothing about Krypton or even less its people. To me it doesn't sound professional and it has no other meaning rather to destroy Superman. I have chosen other ways to his creation.