You have put a lot of effort into this project so far and I wish you all the best. Your research is so detailed to the point its almost professional (or is it?).
If you mean the "Other Renditions" page... I don't know, I think I may have just thrown that together to bash other people's builds.

The Suku-Suku scratch is the only one I hold in any high regard, the rest I mostly just rip on.
I think my rigorous approach to this thing is one way I deal with a lack of confidence in the actual construction. I figure if I plan the ever-loving crap out of it, then I don't need to worry about reaching a point where I've built something and suddenly decide it doesn't look right. (The Blender model is very helpful in that regard - being able to look at things from any angle I like, pose it, etc. before actually building stuff - reaching that level of confidence makes it easier to build with confidence - as long as I follow my plans I'm sure it'll look good. Plus it sometimes serves as a way to let me feel I've accomplished something even if I haven't built any parts.

As for it looking chunky - honestly there are times I feel that way, too. If you look on Scope-eye where I wrote about the upcoming HGUC Zaku Kai, and posted my Blender model for comparison - I think my Blender model doesn't look its best in that shot. Some of the poses where I try things like kneeling and so on, I think my design isn't especially well suited (aesthetically or mechanically) to that stuff, either. From that perspective I can appreciate what they've done with the HGUC... But rather than try to tweak my design to improve the looks in some of those odd shots, I've decided to go with what I've got. I designed it to fit the lineart, and I think it mostly does, and generally I think it looks good that way...