After cutting a section or placing an elevation mark on a plan view, it would be nice to be able to set the visibility so certain marks are shown and others aren't. Kinda like a temporary dimension. And if you do turn a mark off then you cant add it to a sheet until you turn it back on, this would act as a safe guard so you don't add dead references onto sheets.
It's nice to be able to cut sections for working purposes only, but you don't want on the printed plan.