Pre rendered backgrounds are useless outside of some very certain types of games (like Bastion or Muramasa).
The issues with pre rendered backgrounds
1) You cannot have any sort of movement in the environment think of God of War, or the building collapsing in Uncharted 2 or the plane or ship in Uncharted 3. Where the scenery, environment and objects keep moving which causes variance in shadows and lighting, and how it affects the animation of the characters.
2) Zero interactivity, if you think games these days have no interactivity anyway then you are wrong. Environment interaction will be absolute zero if they have pre rendered backgrounds.
3) Day night cycles, you cannot have say for example a level where the time of day or lighting conditions change as you progress through the level.
4) Fixed camera angles, if you thought games like God of War and Castlevania Lords of shadows have fixed camera then you are in for a shock since these games have a scripted camera that moves along with the player, with pre rendered backgrounds you'll have the game throw a blank screen (even if for a 5th of a second) at you every time you enter a new area no matter how fast that new area is loaded, it cannot be seamless as they are two different backgrounds.
5) The characters would stick out like a sore thumb because of how they are lit when compared to the lights in the backgrounds, since none of them affect the characters, so they would have to manually lit the characters depending on each scene and even then it'd look out of place.
6) It's a pain to create these super detailed environment especially when you consider how much time and money it takes to create the real time environments. This is the entire reason why developers focus on real time effects for everything instead of baking some things into the texture. For example you have a scene which you create and then render offline now imagine that the art director is unhappy with it, which means they have to redo every thing again and again until he finds it to be fit. With real time you can just do it at a click of a button and you see the change immediately.
The problem with pre-rendered is that it offers zero room for scaling for the future.
REmake looks great, but it's still a 4:3 game with backgrounds rendered at 512x448 that have compression artifacts.
But with the wonders of Dolphin you can do some stuff that I figured you might appreciate, like dumping the background textures as well as getting a close up look at the models like you had said you wish you could do. You should check out dolphin!
saying the lighting has to be bad is a big jamoker. The lighting looks great
That looks good obviously, but it's just one have one image with no lightning and the other with lightning and they just alternate between the two. Pick any game from last generation and you'll see how different the lighting and shadows look and move for lightning strikes when compared to the RE make images you posted.