I really don't get why anyone is sticking around TNA at this point. I think those 4 should all sign with the WWE. I want to see Angle have one last run in the WWE, Jeff Hardy is finally clean and would be very popular if he were to return. Bully Ray has been absolutely great the past few years and deserves a run in the WWE before he retires. Samoa Joe needs to drop about 50 pounds. But I'd love to see him get motivated, lose weight and sign with the WWE.
If WWE was interested in any of them then they would have signed years ago. The latter three were released when the roster was much weaker than it is today, and Joe was passed over and would likely have to go through NXT which isn't going to happen.