Hey,
Been messing around with Instant Terra for a little bit. I really like it. I just introduced it to a bunch of people on the unoffical CryEngine slack and a few Unreal Engine Groups. There is room for improvement though.
Here is where I think Instant Terra could be improved -
1. Adding the following nodes - Blend, Combiner, terrace, fluvial erosion, thermal erosion, etc.
2. Support for Tiled Terrain export.
Details here Look for Tiled or Tiling using CTRL + F.
3. The ability to import GIS / SRTM Data.
Thank you for your time,
HeadClot