Most of these remakes are pretty horrible, usually with crappy gameplay and hi-res gfx that kill the original atmosphere of the games and don't bring much in the end.
The worst being 2d games remade in 2,5d with atrocious gameplay, less than approximative collisions, slipping characters and general bad taste all around.
Note that hi-res gfx are much harder/longer to draw than lo-res ones especially when there's a lot of them that's probably why most of them look dashed off or are made from slightly reworked cold 3d scenes.
Also it's tricky to do smooth 2d scrollings on PC, due to different refreshing frequencies and variable framerates.
can be fun too.