I'd like to see special symbols rendered in the text flow - e.g. power points icon with a number superimposed. Like "The flug hit you for <hiticon>5</hiticon> pts damage"
Hard in gimp - text layout is not directly available as a method separate from fonts. And fonts cant do color in Gimp. So have to parse text, look for tags, insert icons, do your own word wrap etc. All in Lisp. Yuck.
Manufacturing is out of scope for this product, at current. It is firmly a prototyping tool, not a production tool. The idea is to make it trivial for designers to iterate so they will do more of it. More iterations means better games, faster, and we all win.