When Aries arrived in NXT the bar had been set to see how far he'd be able to go up the card before hitting the main roster. Honestly, at first I didn't think that Aries would ever hit the main roster as I didn't think he sort of fit the WWE model. But when the cruiserweight division was brought back it opened the door for a name like Austin Aries to reach the main roster. Now I do think that given the chance Austin could've put on display the talent that made him a top talent in ROH & TNA. But with backstage issues seemingly playing a part in holding Austin back it kept him down.
Either way at this point Austin has left the WWE and is now heading back to the Independent circuit. Could we see Austin head back to GFW or ROH possibly yes as I think both doors are still open. Aries is and has always been a vastly talented performer, but maybe not the right fit for the WWE.