Remember, Vegas does not make odds based on who they think will win, its based on how they think the bets will be placed. They want to be as close to 50/50 as possible, among other factors.
As far as the Vikings, every post I read is based on FAN decisions. The Wilfs, they are making BUSINESS decisions. The current staff and players, is putting butts in the seats, and the Wilfs are making money. So not changes are needed.
Fan quit going to the games, then things will change, until then, get used to Mn Mediocrity.