something we run into often is that a user may or may not have rights to view/edit content even though they are the same UserType.
This gets a bit wierd in mendix and theres no real good way to solve who can see what without doing wierd checks and reloads.
Example 1:
we have an application where teams can create edit and view projects.
The teammembers are dynamic and can be added or deleted based on the project creator.
Example 2:
The Admin wants a datamatrix where they can check-on certain users with certain rights to access certain contents.
Im also not sure how to solve this, but this is something we run into quite a lot.