Hoi, At the moment we have several BIG categories in use in many wiktionaries. There are even bigger categories in wikipedia. The w:de: Mann directory for instance has over 22.000 articles ... The problem is that at this moment they break the capacity of the servers to cope. Therefore there are temporary restrictions on the size of what is shown in a category.
This means that for instance the wikt:nl:Categorie:Woorden in het Nederlands will not show all its entries. As this is temporary and as the developpers are working for a proper solution, there is no need to change the way we work. We just need to wait for the developpers to come up with a solution.
There is also no need to pester the developpers about this one; they ARE working on it.
Thanks, GerardM