4. Mid-90s Raw
In its first few years of existence, Raw (as a one hour show) had a pretty simple formula: one "feature" match between established names, and a whole lot of jobber squashes. Then WCW Nitro hit the airwaves in 1995, and their ambitious programming made Raw look palaeolithic.
Gradually, Raw began phasing out the jobbers (though it's not like the midcard of the day was loaded with PPV-quality names). That was just the first step toward evolving, as more adult themes, and a two-hour time slot, aided Raw's change into more desirable form.