Scripting FR: Batched LUA HUD Drawing

Looking at some of the performance profiling, and how long it can take to do some HUD drawing, even when not in world-space, it seems like some sort of batched HUD drawing would be in order. At least for rendering Images (both normal and monochrome-aa-type), a proper pipeline would be nice.
Even losing a bit of flexibility, or having to register all textures to an atlas or so before using it, some option for higher speed drawing would be worth it, as otherwise it is not really feasible to do much UI-Improvement from the scripting side.
Even minimizing it's drawcalls as much as possible, the HUD script alone tends to already scrape the limits of acceptable performance impact.