Jesus Crash is a PS1 title, it just wouldnt be that cool on PS4.
ND should make UC4, period.
And why should they? With your logic they shouldn't make Uncharted 4 on the PS4 because it's a PS3 title.
I would much rather see a game that actually takes SKILL on single player instead of the boring/automatic platforming in Uncharted.
Other than that Uncharted 3 was nothing compared to Uncharted 2 in terms of story, and I highly doubt they can ever write a story like that again for the Uncharted franchise. It will probably just go downhill. Naughty Dog should take a break from Uncharted to keep it fresh instead of milking it and make a new Jak&Daxter game. Just one more to finish off the story once and for all.