Browsing for rugs in Build mode is frustrating because they are not organised by size, and it is difficult to eyeball the exact size of a rug since all of the thumbnails are equally sized squares which the image of the rug is scaled to fill. It takes forever to find a carpet that will actually fit the room you're building in.
So how about taking advantage of the Sims 4's room system to filter results in the rug category by the size of the room? They could add a feature where you select a room, hit a "filter rug" button where the copy/move room buttons are, and then only return results in the rug category that would fit within the room.
Who's with me?!