I'm always getting ideas for BeamNG while playing it. I already had the weather idea http://www.beamng.com/threads/weather-and-details.19096/ I got some more ideas and i want to have this in one thread now. I dont feel like opening a new thread every time when i get new ideas. Some more: Career mode, Jobs like Racing, Crash-Testing or trading vehicles "choose your job". As longer you own a vehicle, it can take damage like rust, broken suspension parts, broken brake system and so on. Like a real car. Tire wear also as example. Money System to buy cars, parts (new and used), garages and maybe a home to control everything. Starting in a caravan or a very broken house with just $1000 and a Covet Beater. Engine Swaps, already seen this idea in the Forums & Custom Bodywork. Paintjob-Designer, placing stickers on the car to make a custom paintjob. More Ideas are on the way for sure.
Some of these things you listed are probably planned for the future. Most likely a long ways down the road.
sadly not one of these is new. Most of them discussed to death. A few even covered in the reddit AMA on Friday.