I would prefer improvements on the existing game than a complete revamp. The art style is one of the best qualities of the game.
Pictures like this are what convinced me the most to play the game, despite the gameplay limitation and the not completely original plot.
They create a very unique atmosphere that i am very unlikely to see in current era games. They convey strong feelings without showing you the whole thing, and they are dirty enough to create an entirely different world, with its own grain and visual presence.