There is only one problem and it's one that the higher ups didn't think about is you can't eliminate the negative feeling that some fans have associated with TNA just by changing the name and expecting everything to be different. The reason why the saying "Distance makes the heart grow founder" is a true is because when you have something you start miss and want it back. But if you can never miss it then you never get the chance to want it back. The best thing that they could've done with TNA is sent away for a few months and repackaged the company in a different way by taking a few months to develop a new identity for the company. It might be clear why they could have done this, but that doesn't mean it wouldn't have worked better the re-branding that they decided to do.
Also my last point is that the show has been called Impact since 2005 when they debuted on Spike TV so it's not like it's a new name. This is another reason why I feel like if they took longer to re-brand then it would've been better off for the company because everything could have been brand new instead of a lazy name change.