I'm thinking of changing mine, more for the reasons, A) to bring the wheel closer to me using a wheel boss for when I'm in my harnesses, for a smaller diameter for easier handling of it (yes, I'm saying I prefer playing with small objects, yada yada... ) and C) so that when I leave the car parked up on the road at home I can take the wheel out using a removable boss, as it's a theft deterrent if the wheel is in my house.
However having said that, if I used my car a lot on the road I'd want to keep the standard one. A solid ring of steel with some high density foam and leather wrapped around it is going to do a lot of damage. I wouldn't want to hit my head on it at walking pace, let alone at car crash deceleration speeds.