@ardila.nl This is starting to get quite off topic, but not a big deal.
To be honest, there hasn't been much planning for the Wiki. The plan is more to hope that it sorts itself out a bit.
Personally I don't have much experience with Wiki (as an editor). I know pinkunicorn (handles most support) has contributed to a few Wiki-sites over the years, also very early on actually. So he has a bit better understanding.
Optimist on the run (user of Project-GC) has helped out a lot when we launched the Wiki, by getting some basic structure into place and also adding several articles, and correcting many mistakes I did. Everything from grammar, to wrong facts, or even not very thought through flows. He also has a work that relates to handling Wiki pages.
In general you are allowed to do whatever changes you feel fit. If you have questions you are welcome to ask them, to see where we stand. Long-term I am hoping that every page on Project-GC has a page on the Wiki, working like a manual. But we are obviously far from there at this point. If I recall correctly I did create one such page myself. I have a slight memory that I got some support question that I chose to answer by documenting it. But it might also be something else I documented.
The only thing I remember regarding structure is that pinkunicorn told me to avoid Namespaces. Our Wiki probably won't be big and complex enough for that to be useful. Again, I have pretty low competence myself.
In short, any help, from editing pages to adding pages and better structure is very welcome. I have hopes that the more content we get into the Wiki, the more other users will be interested in contributing to it.