I'd have Genesis, Lockdown, Slammiversary, and Bound For Glory as the Pay Per Views and every other month having the specials
Pay-Per-View is nice, but TNA does not rely on PPV money. Right now it's in their best interests to realize that having with a PPV every month is not the best idea business wise. They are trying to compete against a company who's main show routinely gets triple the ratings theirs does, and who also have three other TV shows during the week.
They aren't going going to add two million viewers in a month, if they want to compete they need to be available for free as much as they can. Giving away pay-per-view quality shows to hype buying the really big pay-per-views is a good idea for right now.
The thought that to be a successful national wrestling company you need 12 PPVs a year is silly (not that you think that, but it's clear that is seen as the bar these days). UFC is really hurting WWE's buy-rates, just imagine what they're doing to TNA's already embarrassingly low buy-rates. Hell they're on the same channel!
TNA's emphasis has to be on gaining exposure right now. Not necessarily making a profit. They've spent a ton of money, and they have to do everything they can to gain exposure to try to get it to pay off. Staying the course after spending all that money is not a good idea at all.
All that being said...we don't know if this is the true story or not. I just hope it's true since I've been hollering for TNA to do this for a while.