I love Austin Aries, but let's face it the guy isn't getting any younger. If his girlfriend just signed with the WWE and will be on NXT, then the perfect fit would be for him to sign a short term contract with TNA. That way they would both be in Florida, and won't TNA give him the option of doing indy work as well if he wants.
Also with the crap surrounding Alberto Del Rio, which quite honestly seems to be never ending, then this might be the time to approach Jarrett and company as they need someone who's well known if Del Rio does go down the tubes. There is also an added benefit of using Aries on commentary, which I think he's quite good at.