If you give the Brandels a new vanity with a Travertine marble top, and a new Kohler toilet that is really expensive, then they have to rip out all the old stuff. When they rip out all the old stuff, they will decide the mirror is too big and has to go, and also that wall-mounted cabinet circa 1978. When they take out that wall cabinet, they will decide that the "decorative wood piece" that holds the toilet roll to the wall is dubious, so that will have to go, too. When that goes, it exposes the fact that the previous homeowners used it to lazily cover up a square hole cut into the drywall for no known reason (Escape hatch? Mouse exit? Secret stash of cash hiding place?). In addition, the paint will need touching up, and a new tile backsplash will have to be put in. A trip to Home Depot will have to be made, and the credit card exercised. New flooring? What kind of storage for the bathroom stuff? A smaller mirror?
Taking all of these things into consideration will result in debating over whether to move the plumbing *now* for the future shower stall, or just leave it until they do the shower (at some undetermined point in the future).
They will briefly consider repainting the entire room in a different color.
They will decide against that, since the current paint job is only a year or two old anyway.
They will rip out the existing vanity and wall cabinet, mirror and toilet-roll-wood-backing-piece, and they will make the trip to Home Depot with two exhausted and incredibly rambunctious children, who will cause them to nearly lose their minds right there in the store.
They will go home, where Travis will tape up some spots on the drywall after dinner and the kids are put to bed, and then they will decide that that is Quite Enough For One Day.