It's not so much that I can't do it as I don't really need to do it. It's actually a pretty common project(lots of folks have nostalgia for early Bionicle).
For instance, a quick google search yielded this (pretty decent)project: http://www.planetminecraft.com/project/bionicle-island-mata-nui-with-villages/
Furthermore, It's not like I just have tons of time to burn. I'm already working on two maps(one of which isn't Bionicle related), as well as being a junior in high school(with mostly AP classes, might I add) and having some semblance of a social life.
I just flat out don't have time to pack on yet another project.
But hey, if you're looking for something that you can't find, make it yourself! If I can do this map as a one-man effort, I imagine that anyone else could do it too.