I think it really depends on the situation and the talent. In some cases, they will just keep forcing themselves out there, sort of like CM Punk did and in some cases, they will come up with unique ways to get over, like Ryder did. In the long run, though, it all comes down to whether someone in WWE is going to push for you and write for you, sadly.
What happened to Fandangoo?
The character is still around and working dark matches. I suspect he will be seen on the 40th anniversary of Raw in the montage about bad characters, but don't hold me to that!
What is up with Ezekiel Jackson? Is he injured or is creative not sure how to book him?
He suffered another muscle tear after coming back from his quadriceps tear. He is still under WWE contract but hurt.
Is Percy Watson still with WWE?
Of all the people who have had a falling out with WWE, who's return to the company would shock you the most?
Nailz. He punched out Vince McMahon and tried to claim McMahon tried to sexually assault him because he was upset about paydays, so I doubt we will ever see him back in that locker room!