This wouldn't have been a bad idea back in 2010-2011 but as it stands the amount of subscription services out there will ensure that this makes no money at all except from absolute TNA diehards.
For the hardcore wrestling fan alone TNA is competing with:
- The WWE Network (Which is a little bit more but features every single major company and a lot of more minor ones as well with footage that spans about 50 years)
- The Highspots Network (Which is also around the ten dollar mark but includes a large majority of CZW, IWA-MS and PWG events with a large number of old school wrestling, shoot interviews, independent one off events etc etc)
- NJPW World (Don't know much about this one but it's quite popular)
- Independent Services (Tons of companies including CZW, ROH etc offer subscription services now as does plenty of companies in Japan and the UK)
And they're also competing with Netflix, Hulu, Cable Television, Xbox Live and all those other subscription services that are right around that 5-10 dollar mark for fans entertainment dollars. Most people are only going to pay for 1-3 of these services so TNA entering a market that is already hotly contested is dumb.
If it were me I'd dump all the footage to YouTube. Charge 0.99 a month and play one ad before each video and try to make money that way. Subscription services aren't feasible in 2016 unless you have access to tons of footage that people desperately want to see.