When you want to test some parts of your map and export only a couple of tiles with Tiled Build - you have no idea inside this menu, where your mountains location is. You need to select tiles by guessing
As user of another program for Minecraft game - World Painter, i find it useful, when while export of couple of tiles, you can see actual preview of a map on background of tiles selection interface overlay
Soooo, it may be good to add such to WM Pro
