Hi ps99115,
It would probably provide more “contouring” support (or what I call secondary support vs primary support) that “fills in” and supports the more recessed parts in your sleeping profile and it would probably also provide a little bit of additional pressure relief as well (again because it will contour to the shape of your sleeping profile and redistribute weight more effectively).
I may have linked these in a previous reply but just in case … there is more about primary or “deep” support and secondary or “surface” support and their relationship to firmness and pressure relief and the “roles” of different layers in a mattress in post #2 here and in post #4 here that may also be helpful in clarifying the difference between “support” and “pressure relief” and “feel”.
Happy holidays to you as well 
Phoenix