First of all, thank you for this great project and the time invested in documenting and creating design documents for 3D printers! Great job!
I'm preparing to use this project together with the kids for programming tasks. They have already 1-5 years experience with Scratch and LEGO code blocks approaches, so it would be a great enrichment to be able to code on a LED Table.
You integrated an icon editor and a notification system in the Host, great! Being able to use small Python Apps together with AwTrix is a good idea!
We might need just to add a web editor for both Text and UI Blocks like Scratch or Blockly with a couple of customised blocks to simplify the app creation.
All the best,