Little suggestion: Here’s the current UI for generating glyphs for Thai.
We have to expand each script to show categories, click each category’s button, select all glyphs from the popup and then generate. It might be good to allow all Thai glyphs to be generated in one go, by adding an option next to ‘Thai’ with all 121 glyphs (something like ‘add all’?). Some scripts have quite a lot more categories so it means a lot more clicking.