#3. Paul Heyman's last stint with WWE didn't end well
Getting back to what we mentioned earlier, Paul Heyman's last stint with WWE didn't end well, which is why he's remained solely an on-screen figure since returning to WWE for Brock Lesnar.
As you probably know, Heyman was at one point the head of creative for SmackDown, making it a raving success. He was displaced from the position and then helped with OVW, where he encountered CM Punk.
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However, where it all went sour was when WWE decided to revive ECW as a third brand looking at the success of One Night Stand PPVs. As you may have guessed, Heyman was put in charge of ECW, but his vision was nothing close to what Vince McMahon wanted for the brand. It culminated in one of the worst PPVs in WWE history - December to Dismember.
The disaster of it all saw Heyman confront McMahon after the PPV, blaming him for the failure of it all. He left WWE and didn't return until 2012.