If they execute their show correctly and effectively cater to their core demographic in each of the segments/matches you mentioned, it could have a long term effect in bringing in some potential new/lost viewers to their brand.
The Great Muta is a legend, and his presence might bring in some awareness to those NJPW/NWA old school fans who weren't tuning in to TNA. Maybe not the target audience that TNA wants as most are older than the prime demographic they should be targeting, but nonetheless if marketed right it could bring in some new fans to give the product a chance. Who knows if the old-school fans might tell their kids to watch TNA and in the process IMPACT gains more viewers. It's a win win if done right. Its's just up to Dixie Carter not to drop the ball on this opportunity.
You don't have to be a fan of the Hardy boyz to recognize that despite years of being out of the WWE they still have their large fanbase, especially Jeff Hardy who along with his brother were one of the most popular teams in juggernaut WWE. Their fame came at no accident, and their fans will follow them where ever they go. Just like I stated previously, let's hope Dixie Carter doesn't screw this one up. It's all about knowing your niche market.
There seems to be some mixed reaction with the possible return of the six-sided ring to Impact Wrestling, some within the wrestling business and other fans. At the end of the day, it was the six-sided ring that made TNA original at the time, and bringing it back could possibly rescue some of the neglected fans/viewers that TNA lost along the way upon moving to the traditional squared ring. This is not whether I like the six-sided ring or not, and right now that TNA is drowning they should bring back their six-sided ring as a desperate move. Calculated risk nonetheless, but a risk worth taking right now.
Some might say Tommy Dreamer didn't amount to much in WWE, but those ECW Diehards might tell you otherwise. Tommy Dreamer's passion for the wrestling business, and his history of hardcore wrestling has made him a cult hero among ECW/Hardcore oldschool fans, and just recently Dreamer has created some buzz with his House of Hardcore promotion which could be beneficial to TNA right now. There's no such thing as a wrestling promotion being too small. Even if Dreamer's promotion won't attract the mass following of a company like WWE, Tommy Dreamer's faithfuls can still use social media to create awareness on TNA and help it generate some buzz. Like I said, it's all about marketing it effectively and knowing your audience. Also, bringing in Rhyno gives the ECW oldschool fans a treat nonetheless.
Last, the PPV Destination X and TV tapings will be in New York City. The Media Mecca of the world. The largest City & Television Market in the U.S which could easily generate some interest among the local TV market and surround area with over 20 million people. I don't care how small TNA is, but Dixie Carter is stepping into McMahon's territory and if you're gonna grab a big piece of a TV market/audience it has to be the GIANT of NEW YORK City!
Like I said, earlier that if marketed right this could have a good long term effect on TNA's future. For their sake and those making a living there let's hope it works out for them.
Those possible TNA acquisitions/ideas might not be as groundbreaking as perhaps the signing of a still relevant and not fired CM Punk, but they have to do the best with the cards they have.