Workload-wise, it’s trivial to add or remove emoji. Icons are resized automatically and adding is a drag-drop operation. What would help is to provide them all to me with their filenames as that of the emoji code or name used to search and add it to your content.
For example, the H icon, which is now added, is
:h: and the file I uploaded was
But as the discussion noted, they will all need to be usable in both light mode and dark mode, which means adjusting colors or adding white outlines to those that are black. In Dark Mode the latest are Black on Dark Grey. in WCAG Dark Mode, they are almost invisible with Black on a very Dark Grey. Even the Hero icon becomes a vivid blue on black. Very hard to see.
Also, keep in mind that the names of the GTG-specific emoji/icons may collide with those of the standard emoji set. When that happens, the GTG-specific icon will take precedence.
it might be worthwhile to bring someone from GTG in on this, to get more official files. I do not have access to any of their artwork.