RPGScenery is a bit of an oddity: a map editor without the ability to edit maps. But it certainly looks gorgeous - and has huge DLC potential.
https://store.steampowered.com/app/1689510/RPGScenery/RPGScenery is a tool for pen and paper RPG game masters to help them visualize their stories and make the combat scenes more manageable.
In RPGScenery you are able to browse the released scenes, select the ones that fit the most of your campaigns and create playlists from them. You can support your stories by showing the players the locations where their adventures takes place from various views or switch into map mode easily to simulate battles with the help of the customizable grid system.