Pretty sure at this point there's approx. 3000 different OWS element assets between all the sets. I included the tilesheets to hopefully make it easier for people to use in programs like Tiled, as well as the individual library assets to use in Roll20. Yes, the advantage of creating the map in Tiled, and then importing either whole maps, or overlays I thought would make it lighter to run a game. If you look at our creator page, there is a link to our YouTube channel with numerous tutorials on using Tiled (Look under the playlist "Mapping With Tiled, baby steps"), and how to save and export maps and overlays to bring in to your library like here on Roll20. So like here, the map terrain can be exported out as one layer, the towns and locations as an overlay, and the banners could even be a separate overlay as well.