Supreme Marvel says:
" The Doomsday thing I'm not sure about. I will be happy if Clark completes his training in the first episode of season 8 and then fights him. But he should easily be killed by him without being at his true Superman self."
I wonder why everyone so hyped about his training we are talking about a guy who has beaten Zod, Bizarro, Brainiac, Zor-El, a group of Phantom Zoners and not to mention millions of other freaks that have appeared through out the series. At times I question why does he even needs training after seasons six and seven.
Oh and did you notice the comparison between the season 8 and the '8' shaped symbol Jor-El once carved on CK's chest?
As for Doomsday, I think they are going by the alien trapped on earth with amnesia route.
From what I could deduce from spoilers, Doomsday is an alien with no memory of his alien origins and living in a human body and going by the name of Davis Bloom, a bartender. He has a crush on Lois but she suspects somethings up with him. As the series passes Davis begins to transform into Doomsday and fights Clark outside of Metropolis. Clark kills and buries Doomsday and Doomsday claiming he will return one day and he will kill Clark.
Sorry, I hope you get what I'm trying to say here. I also think they should keep two actors for Doomsday one to play the Davis Bloome and another muscle bound actor to play the actual monster. Morever, in a way they have been building up for Doomsday like the phantom Titan Clark fought in season 6 he had a kryptonian symbol for warrior on his arm and Edward Teague from season 7 's