Hey Karl, nice pitch.
The problem with it is that you have too little to show for such an ambitious project. Speaking from experience, it's very hard to find someone to help you with a project if you don't have a sufficient amount of content on display. A playable demo really helps in this area.
Also, You say that the project is very popular, yet on your blog there are no comments, and only 2 screenshots of a few sprites.
by the time I reach the level of skill required to, for instance, program the crafting/inventory system, all the project's popularity/interest will fade out.
If your game is truly this good, people will not forget about it.
Also, pretty much all of the very skilled Construct users around here have their own projects which they tend to. Asking someone skilled in an area for large amounts of their time to build your game,for free, is a very large request. The payoff in the end better be huge; and the only way to show that is by adding more content yourself, or better proving your games popularity. In general, games become popular after they are played/reviewed, or released an amazing trailer showing gameplay, etc.
Of course I might be wrong, and someone will offer to help you for a while. You never know.