2 exit stairs makes sense, so long as one of those can be a fire escape. I think a lot of places banned those though because they're "ugly".

Elevator laws make sense so long as they apply to general areas and not every single building. It would really suck for the majority of builders to decide to cost-skimp and skip elevators, effectively locking disabled people out of dense living.

Parking laws need to be removed and replaced with minimum transit requirements. Provided transit options are accommodating for disabled people (which is totally possible, all the buses around me do it) then the only thing hurt (read: no longer subsidized) by making parking optional are car manufacturers, dealers, and gas companies.