You could grab cars in ROR by clicking on the car and it would be a nice feature to have again in BeamNG. You could drag wrecks out of bad spots, open doors from wrecked cars, rip parts off or just throw the car around like a maniac. Personally, i would find it a very helpful little feature. Edit: And make it toggleable.
Whoops. I didn't think anyone would have suggested this before and i didn't really know what search term i should use to check. Sorry.