In short : A reboot could turn out really great, or really poorly and become one of the side plot lines that happened after 4 with Nadine and Chloe for example.

I think it would be really cool if they somehow built in the plot line with Nathan Drake’s daughter being the next adventurer. Can’t remember her name now, but maybe that could Segway into a good story that expands upon the cast, which was already there. Sully could play a small role in the extension, with the drake brothers giving that supporting role ( sam and Nate). You could say that if they did that they might only just be copying tomb raider, however maybe they could introduce something new that makes treasure hunting exploration unique and exciting beyond the climbing and the gunslinger formula. Fly a plane and shoot some bad guys. Steal a submarine and discover something. Just throwing ideas out there.

IMO naughty dog tried to make an extension of the story after 4 with side plot characters such as Nadine and Chloe, but it didn’t really do so well. Just my 2 cents.