Resident Evil 4, is hands down my "Favorite" of the RE series of games. I liked the merchant, and ability to upgrade weapons etc, along with the story and gameplay.
i played it by myself. Why would i like to see it on GOG? because i would like a copy of it that i can play IF i find myself without an internet connection. I would pay for it again here, just to have that capability.
I am all onboard for "Make games last forever" , especially the good ones, :D
i know "good" is subjective. :D