We know that the audience is among the biggest TNA problems (she is totally apathic, over-reacting or stupidly reacting).
Visiting this part of the forum, i found a great video about TNA filmed outside the impact zone :
As you can see the audience is hidden into the dark and the light is focused on the wrestlers and where they move. Such a light system could avoid the TV fans to have to endure the IZ fans. You could also create the illusion that Impact Zone is far bigger than it's tiny real size (not mentioning the architecture).
And you can add many lights like during this TNA show in Wembley, so you don't look like a house show.
I don't say that TNA shouldn't move away from the IZ, but i only say that the future shows can be action-focused and that you can hide a crappy audience using lights. You can also use plants among this hidden crowd to get better and synchonized reactions or chants (or recorded reactions like WWE sometimes).
This simple light system change can greatly improve TNA.