I would say the claim Westmeath didn't try to win is a bit unfair. They had two weeks to work on a system designed to give them a chance, which they had at half time. But the hardest part of this system is what you do with the ball. That's what took Donegal 18 months to fine-tune. They did manage to work it quite well out of defence but any time there was a physical contest, they lost it. The runners in that situation need to be in threes. They ended up shooting from distance. It was the problem Kildare had when they tried it in the last two years with Tomás up top. They opted for going long a lot if he did manage to win it with two or three defenders around him, he hadn't the support runners.
I would think Tom Cribbin has himself a template there now. He can certainly adopt a structure of being more defensively sound and then work on being more of a threat with the ball. Conditioning and fitness are obviously huge parts of that.
As for not coming out at the end, I would say Westmeath have emerged from the game with their morale unaffected. That is no small thing. As others have said, Jack Sheedy was pilloried for being naive. It can't be every way.
O2 is right of course, Kildare tried to get a balance and when you do that, you must be clinical and really accurate with your passing because when you're committing players forward and are turned over, you're toast against Dublin.
Dublin were bad and I think this raises major question marks about them once more. Their pedestrian play was brutal given that they were not coming up against this system for the first time. All the money they have, they still are trying to beat players one and one. I'd lay money Donegal would have broken behind the cover more often, with better kick-passing and the commitment of runners in twos and threes around the ball carrier. Kerry would have kicked more points from distance.