What is the domain in question? Have you run into issues where the power users who are non programmers want to do more programming like tasks over time to exert more control?
The domain is (non technical) government data analysts.
Yes we ran into this a lot with people wanting more control. There are several hooks and extension points in the software. Basically every graphical element has the equivalent of being replaced with an actual code file that you can substitute at runtime. This gets never used by the customer, usually we just provide extension libraries that abstract the concepts of whatever they want to do.
