First of all improve WIREFRAME speed representation because it is tooooooo slow.
As second step I propose to create Mixed Display Method. It can be useful if i have a little bit complicated zone of assembly and I want to have my working component shaded and all arround in wireframe or some other representation.
I intend the creation of a separate environment that I can call when I want to recall that particular shading configuration of assembly. See I-Deas NX method.