If the series isn’t finished by GRRM the only people who will talk about how “it should have ended or how GRRM meant to end it” will be total nerds who have no life. Sorry, I would have loved for GRRM to finish it himself, but I think by this time we know that isn’t going to happen.
I think part of GRRM’s problem is he is already way past his notes. He has added so much crap that he doesn’t know where he is anymore.
For all his faults, and the last books could do with a good cutting down, he neither turned the characters nor the narrative into a caricature of themselves. I could care about how, say, Jon Snow learned nothing whatsoever in the show and what that means, but I don’t believe it’s even intentional by the writers.
The only person smart enough to fly the F-16 would be the Imp, and I give good odds on the imp.
edit: Wait, I take it back. If Daenerys is immune to fire, it’s a good bet the dragons are as well. Therefore the jet’s missiles probably can’t do much against the dragons.
I will forever love the show both for providing an ending to the series that GRRM never will AND for cutting the endless Kingsmoot down to a 5 minute scene.