Ah, I think I see what you mean now. I knew about the temporary window-resize (R3 while the menu/window is active) for basic menus and certain types of dialogue bubbles, which I told him about (he said it only worked on the web launcher, or something), but I wasn't aware of a permanent resize option for each individual HUD window via the HUD settings. I'll have to pass that along to him.
Do you know if that includes basic dialogue, though? While most menus in the game seem to have some resize option or other, I don't recall ever seeing one for the basic dialogue bubbles. (Not the pop-up ones, but the ones you have to actually click/confirm through.) I think that would be a bigger deal than many of the HUD fonts.