as recommended my many people i have my custom.cui as the main, acad and express as partial and company cui loaded as enterprise. I put all of my stuff in custom.cui. I have even sripped down a few of the acad toolbars and put them in my custom cui. The standard toolbar I use only has new, open, save, print, publish, match properties, editor. I have done this to dimensions and layers as well. If I ever need the full menu I can open the one from acad.cui. It just eliminates alot of garbage i don't use.