This could be a great tool for dungeon masters if it had 1 specific feature! When designing an encounter, I would love to share a 3D view of the scene where an important bit of action is bout to take place - clearly FlowScape ticks that box. But what would make it super useful is if I could automatically get a 2D top-down view of the same area, preferably with a 1-inch grid (fine line) overplayed on it. 

Any chance the tool can do this? Or even close to this? 

Your wish has already been granted :)   

Click on the house icon in the top left then select MAP.  When the pop up appears click the Ortho check box and then Grid, move the grid slider to the right to get the grid size you want.    then click 2K, 4K or 8K to get a screen shot without the controls.

The screenshot will be stored in the Maps directory wherever you installed Flowscape.  For me its: C:\Program Files\FlowScape\maps