Terrain Blending Tool (based on Star Wars: Battlefront)

[Mireneye]

@Salameander;652055

Hi sorry I forgot about this topic, so my project its only test and WIP but if you need it here you are: Dropbox - Error - Simplify your life
It has many limitations so if you improve this solution it will be nice to see it :).

Tested it, and I get results looking like this, which I assume is wrong:

Any ideas/help appreciated?