Elimination Chamber serves a purpose at least. It's the last chance for guys to get to WrestleMania, and in order to do that, they have to get through the Chamber. That's not the kind of match you can have whenever, and it gives five/six people who are in title contention an opportunity they failed to take advantage of at the Rumble.
I'm with you on the other shows, though. They can all die. If it were up to me, I would go back to that 2008 schedule. It was perfect.
January: Rumble
February: Elimination Chamber
March/April: WrestleMania
April: Backlash
May: Judgment Day
June: Extreme Rules
June: Night of Champions
July: Great American Bash
August: SummerSlam
September: Unforgiven
October: No Mercy
October: Cyber Sunday
November: Survivor Series
December: Armageddon
Money in the Bank could go back to being a match that happens at a certain PPV. It doesn't have to be its own show, but I understand.