I find the Uncharted series to be massively boring... I just don't like games with cover systems, they remove any semblance of skill or fun from the equation. I enjoyed the story of these (except 3, that was terrible) and I can appreciate the really cool graphical effects... But the gameplay just puts me to sleep.
The only game with a cover system that really did it right in my mind was Vanquish, and that's because cover was completely useless and you could boost across the battlefield with your ROCKET-KNEES! And unique weapon power-up system, and other cool mechanics... and ROCKET-KNEES!