Ghost Anything Anywhere would be great!
Often I've had to make additional stories for elevations, sections, details in order to see other sections, plans, whatever contextually.
Having done that, each ghost story also needs a rotation definition and possibly a alignment or insertion point. To see a plan ghosted under a section could use the section marker itself to help in this regard (at least with rotation) and if the section marker position is the "0" level position on the section drawing. However, when used for an elevation, the marker position may not be ideal for the ghost view, so one needs to be able to move the ghost view around.