I have some layouts where a drill down does not make sense for every row. This is the case for entities that are "pseudo hierarchies" where the drill down works on the lowest level, but not on pre-aggregated levels.
It'd be practical if I could have a locked by for the drill down similar to the locked by of the data entry.
Workaround: I can disable the drill down or enable it.
If it is enabled and the user drills on a row that does not contain details, but just computed numbers (e.g. rules) then they see an empty drill down dataview which is confusing.