The idea of Impact Zone LA is a great one. Didn't they run a few shows in Las Vegas a few years back? Imagine an Impact Las Vegas road trip!
I agree that the Impact Zone is getting a little monotonous, hell even ECW had TV tapings in different places every once in a while.
I think a good idea would be for TNA to go on mini tours. Something like going to one particular area of the country, run 4 live Impacts that lead to a PPV. Then go back to Orlando for a month or two using that time to advertise another TNA Tour. If it is a success you can go back and forth until you build enough of a following that TNA can go on the road every week, or at least more often than never like it is now.