This is great. I'd love to see some accessibility aspects added.. This would be MASSIVE for schools with children who are learning to use switches or eyegaze or other access methods and could be educational too. (see https://www.helpkidzlearn.com/cm-info for what is kind of doing this but downpour gives way more flexibility). So: Switch scanning ability. Highlight each part in a linear way. Allow space to select that item. Enter could move the item on

Im not sure if this would work but look at https://tools.openaac.org/ see https://tools.openaac.org/demo.html and hit scan in top right for a demo

I'd be happy to offer more support on this..