Hey - speechless at how talented you are. Storms, you could get paid for this sort of thing!
Just a thought - if glyphs can be modified to such an extent, with lines being added ad lib and whatnot, then I'm reminded of this gif of the Al Jazeera logo being made from the original script and the calligraphised (for lack of a better word) to the shape of a flame.
Is it possible that glyphs started out as some sort of unmodified original script, and were turned into what they are now? Presumably, then, there would be a way for you to go backwards from the glyphs and figure out the original. I'm not sure, and certainly what has been achieved thus far is unbelievable!