Know-How Exchange : Strategy

I work for a company that uses technology to administer our services to our client base. We are recently looking to re-organize responsibilities as it relates to who does what. I am what we call the "Platform Owner". I want to know how other companies are organized in terms of sharing responsibility on items that affect their software products. For example, who does the marketing analysis, sell sheets, determines pricing, etc? We are looking at implementing a cross-functional steering committee to address prioritization of the RaodMap that would then be give to another cross-functional customer group that would determine detailed requirements. Has anyone been organized in this way and what are the pros and cons? Other suggestions on how we might be better at approaching this? Also, does anyone have a visual that they have used to explain the different roles and interactions in product development. I know what I am asking for is pretty wide open, I just want to see what others have done. Thanks.