I didn't understand your point exactly. Every project has more than 1 shaders usually right? I layed the UVs in different spaces. Every space will get 1 shader. Also i can assign new resolution for every UV space seen in the picture below. It makes it easier to work in mari by applying different colours to patches and gives you more freedom on resolution for different patches.

I haven't done texturing before, learning from this process. I will see the outcomes when i get some progress. What did you mean by your question exactly? And did you see the video on the post?