Joe hasn't improved in at least three years. He might actually be getting worse.
When's the last time he had a great match?
When's the last time he made someone besides himself look good in the ring?
When's the last time he cut a half way decent promo?
Joe will eventually go to the WWE, but he won't be able to adjust to the WWE style of wrestling that focuses on ring psychology.
Right now he is all about making himself look good. Thats why I will always consider people like Randy Orton and HHH to be great, and people like Joe to be halfway decent. If Orton or HHH are given 15 to 20 minutes they will consistently put on good matches where there opponent looks great even if they get pinned. Joe will no sell your offense and might even injure you in the process. I'm actually surprised he hasn't seriously injured anyone yet.
A) At the last PPV
B)When he had a match with Scott Steiner
C) After Jarrett busted him open