Actually, I do have one, and this is the project I keep referencing to everywhere.
A 1:1 scaled version, relatively low-res (low enough not to be a pain in the rear to build, but high enough to be recognizeable and relatively accurate once resin and FG is put on) Gigantic Guyver (preferably both versions, but lighter being first). Like I've said elsewhere (I think) this'll be a b*tch to make, but soo worth doing in the end. Keep in mind the blasted things are like, 9 feet tall...
No, I'm not going to pep and then resin the model (well, okay, maybe for a reference, but the toys can do that too), but for the individual armor parts and certain under sections too. The plan is for my head and arms to be where they should be (up at the top) and rely on stilts to make up the difference.
Actually, looking at some of the pics, I wouldn't mind trying my hand (eventually) at making a 1:1 scale costume for some of the larger ones.