The positives are:
WCW used to around 4000 for their Clash of champions. The big TNA PPVs do from 3000 to 5000. So if they somehow can do what WCW did and grow the audience for their weekly tv-show it could be growth. It's not impossible
The negatives:
Ratings for Impact were down last year. It's not like they have grown their business since 2009. They had to cancel the monthly PPVs. Is this really the time and the place for this?
Has there ever been any proven correlation between the size of the arena, the number of people in attendance and TV ratings?
How do you know if them canceling monthly PPVs was a sign of financial trouble?
Here's the kicker. Essentially, they didn't cancel anything but instead lowered the prices of 8 of their PPVs and increased the prices of 4 of their PPVs. They still have monthly PPV content, they just change its gimmick, name and focused the attention on 4 of the PPVs.
Now then - will this improve ratings? No. Like I said, there's no reason to think that bigger crowds equal bigger ratings. Ratings are dependent on way too many factors in order to magically spike because of just going on the road. It won't happen, don't expect higher ratings, people don't watch for the extras in the background, they watch for the product in the foreground.
Will this improve the quality of the product? No. Quality is dependent on content. An extra few rows of people isn't content.
Will this improve the presentation? Yes. It looks bigger, it's more impressive and presumably better looking.
In the end, this was as much of a P.R move as it is an aesthetic boost. It's a morale boost, it's good in terms of being breaking news, it's good for marketing, it's good for business. This was a BUSINESS move, not a "let's make this shit more awesome" move. Don't expect a different product with this. We'll get the same amount of TNA we've gotten before. It'll just be in a different building.
If the company is ready to do it, if they have the financial backing to undertake this venture they go ahead and do it. Go nuts. It'll look better, it'll be a refreshing change.
It shows signs of TNA growing steadily. Nothing more, nothing less.