I'll certainly welcome the change, the shooting elements with the previous 3 entries became the backbone of the series when exploration should have. Uncharted should be fine even with the departures at Naughty Dog- you can really sense though that some want to find new projects to work on but I still believe that this will be a miraculous send off for the series.
Why is the series going to be dark? This probably references to a dark past for Nathan Drake, he obviously abandoned his true self to seek a pre-constructed future as a 'descendant of Francis Drake'. It's clear why Nathan Drake is able to kill so many people, he seeks retribution from the tribulations of his past.











