The material editor for Sketchup is ideal and is a great platform to build upon later.
For example, I imagine it would be a great place to provide additional options for finetuning the grass (length, density, ...).
Can we have the same editor for Revit? Revit now has an API in place to manipulate the appearance of materials, so the Enscape material editor could keep everything in sync with the Revit model.
That way we would still have a 100% in sync model, but we can interact with our materials in a way that is 100% finetuned for Enscape.