https://wiki.openstreetmap.org/wiki/Tag:aeroway=navigational In my opinion wiki is saying just about one node for structure. We do not map for renderer. So discuss somewhere, if it would not be better to use some tagging to get the same result. Like there can be light:colors="red|white|white|red" in combination with direction it needs less nodes and make map cleaner. If you start this topic in forums, please share a link here.