Hopefully, hopefully, hopefully, the negative reactions will show Disney that there truly is a line that they should not cross. It won't save the Tower. It won't save Energy. But maybe, just maybe, Disney will realize that the brand isn't everything. People care about quality, and they'll get a pass for something like Frozen in Epcot (which I have to admit feels like less of a thematic breach/gut-wrenching change than this, God strike me where I sit) if and only if the end result is quality, but there are certain things that will not be forgiven or forgotten, and the Tower's execution for a half-thought out overlay is one of them.
Disney proves, even now, that they do have a brain or two in the company. Carsland, Treasure Cove, Adventure Isle, Star Wars in Hollywood Studios, and Shanghai Pirates are proof of that. But tromping out one of your best and brightest to do his dead-level best to not roll his eyes for a three minute video about destroying one of the company's best attractions for the flavor of the month (which to be fair, is quite deserving of its own space, just not here) will not do nearly enough to cover up the absolute nightmare that this has already become.
The question now is whether or not Disney will learn from this. The push of this after Frozen Ever After would suggest that the answer is no, but, if reports are true, Frozen Ever After didn't draw boos at Comic Con, either. The Fantasyland Expansion had less negative reception than this, and its plans were modified in a positive way. To be clear, I don't think that there's hope for the Guardians or the attractions they're killing to make room. What I'm hoping is that Disney doesn't make a mistake like this again.