Just downlaoded this for D&D, I was wondering if it was on the cards and or if it was something more people were looking for to have a flat terrain option and more direct terrain modification options. Similar toolsets to City Skyline for example.

Regarding flat terrain, you can currently work around this by zooming in to a flat area and sizing your buildings/plants/etc appropriately.  

When i release the landscape sculpting it will have a flat terrain, stay tuned

good news that this is coming!