#3 Manager
This might arguably be the best option on the table. While Matt Hardy is a very experienced in-ring worker, his exploits in recent years have garnered more attention outside of the ring.
Matt Hardy birthed a wonderful character in the Broken version of himself, and just because he's no longer wrestling doesn't mean that we can't have the character as a manager for someone else - say an upcoming NXT talent, Bray Wyatt or even his own brother Jeff Hardy.
Jeff Hardy has been veering more towards the Brother Nero and Willow characters we've saw him become in the past, so becoming a fully-fledged Woken Warrior, as we've only seen glimpses of in WWE, may be a great idea, and with Matt in his corner, Jeff could be unstoppable!