Design inputs can be a wiede variety of notions, both physical and in the form of an implmented stragety like marketing inputs. A web search of design controls brings up the following

” Design controls designates the application of a formal methodology to the conduct of product development activities. It is often mandatory (by regulation) to implement such practice when designing and developing products within regulated industries (e.g. medical devices).”

so for inputs of the regulatory world, some are for instacne marekting has to be certain of the claims be done in the marketing sector, and no outragoues claim should be made.