It would be great if one could select multiple "Catchments", since "Region" seems to select a whole country, while Catchment is dividing the island I'd like to capture into three pieces, one of which is huge and the others kind of small. Made a small demonstration of the problem here: https://imgur.com/a/tyudJvW

Another thing that would be awesome is if we could download the .glb files via a link/button in the visualizer, instead of having to manually grab the download link from the developer tools :)