With version 2.11, you’ve certainly introduced some powerful tools for planting design. As a landscape architect, I find the D5 planting library to be one of the most extensive available. However, we often need to use species that aren’t even found on our continent, simply because they are the closest match to what we actually intend.
Have you considered enabling the ability to scatter imported objects, so that firms could supplement the D5 library with regionally accurate species? I realize a great deal of effort goes into optimizing your assets to perform well in scatter, but perhaps you could provide criteria for imported models to ensure they meet those same performance standards.