Cjspeed, have a quick read of the reditt post. Its talking about gordo and has some interesting theories.
We could have been using chiliad drawing wrong.
I've Reddit(haha, get it?), and i agree with everything he says. I think he's onto something. Something everybody else has completely missed by miles. BUT, as per my last explanation, purely the fact that it lines up perfectly with Chiliad leads me to believe that the mural is only meant for Chiliad. OR, that somewhere on Chiliad or once we've worked out the glyphs, there are more clues as to what to do on Gordo, or how much Gorda actually does play a part.
Another reason why i think it's possible that the Space Docker is involved is that it's suggested (only be the requirements to see the Chiliad UFO) that 100% is needed, and that's one of the things you get while on the track for 100%. Maybe the100% being a requirement for the Chiliad UFO is not a necessity, but more a recommendation because in actual fact you need the Space Docker for something somewhere else. If it said "Come back when you have the Space Docker", it'd be a give away that the Space Docker IS required.