Regarding Jeff and Matt Hardy and why they have not returned to TNA Wrestling, the company has been pressing them to get rehab before they return to the company. So far, both have refused. It should be noted that Matt Hardy denied the claims on Twitter.
In an update on Melina possibly taking her services over to TNA once her 90-day no-compete clause with WWE ends, it looks like it may happen because of her close relationship with Bruce Prichard, former WWE employee, who now works as head of talent relations for the company. The Wrestling Observer notes that it depends on whether TNA is interested in her or other recently released stars debuting with the company.