Hood view, roof cam is too high, bumper cam floats in space, HOOD VIEW. And hood should move at least a little with the "physics", there are some car with a hood view (Skyline R33), but the hood stays leveled even under heavy cornering and it doesn't even shake.
Analog rev and speedometer in every view, option for corner rev/speedo instead of centered.
All cars available in Arcade mode, no 100 limitation. If there is a hardware limitation reason for it, have multiple "favorite" lists, preferably with customizable names.
Multiple entry for endurance races and long events, this way you could do a 4hour nurb in a GT, but also a 300pp car, a classic, and so on. It could even be a progression inside the endurance serie itself.
Fast menus, especially if they aren't 3D or animated, and less menus. How long does it take to load friggin' jpegs and some hyperlinks? Because that's what it is, essentially.
Remove B-Spec.
If there still is special music in some menus like Used car and GT Auto, resume the track that was playing before you entered. Tired of only listening to the first 20-30 seconds of a track.
Every car buy-able new, and any car can end up used, hide special versions (black cars) in the used garage.
Remove duplicate cars of the same year, and gen if the model remained almost identical. 1 car of each year/gen/model is more than enough. Even if there is a fog light in the bumper on one version, even if the name is changed, even if one GTO is MR the other FR, pick one model per year. Tired of duplicates.
Bring back the old "city map" menu, if it's the 15 year anniversary, go back to the roots.
Remove the [white] noise from the engine sound generator.
Improve the sound spacialization, I'm following a straight pipe racing car and I can barely hear him unless I'm literally next to him, I should start to noticeably hear it within 10 meters. Read this Yamauchi
http://sengpielaudio.com/calculator-distance.htm
Make the opponents exhaust sound actually come out of the exhaust instead of the center of the car. It's very off putting for my brain when the visual and audio representation of the game don't match each other. Move the sound of opponents 2 meters back, done.
Muting the race music should not mute the winning/losing song at the end of a race, or trophy at the end of a license. I would personally put the "win/lose" music and "used car/gt auto" music together on their own BGM slider in the audio option.
Remove the creation of custom thumbnails for each car. Pre-render a jpeg of every car with its stock manufacturer's paint jobs. I don't need to know if its my pink Lamborghini instantly from its thumbnail, I want the game to load and scroll my car list fast, way fast, way WAY faster, then I'll have all the time in the world to look at the performance points and know if it is indeed my matte pink Lamborghini.
I don't mind oil change, car wash, engine and frame refresh, but give me a way to do it within a nice 3D animated menu and also within the tuning menu.
Remove skid recovery force, remove skid recovery force, remove skid recovery force, remove skid recovery force
Removal of paint tokens. Instead we could unlock each paint individually and use them indefinitely.
Removal of horn tokens.
If you keep the driver outfit feature, put some effort into it.
Oh, and stop saving the game with each and every action I make.