After further discussing this issue, and referencing our current modelling guidelines, we’ve decided on the guidance that free text elements like Comment or Confounding factors should not be included in archetypes for scores and scales unless there are very specific real world use cases where they are needed.
This is in accordance with the modelling principle that data elements should be added to an archetype only if a real world use case for it can be presented. The examples that we’ve been able to come up with for the use of free text additions to scores and scales are almost exclusively information that belong in other documentation, not alongside every instance of a score or scale.
However, as a compromise, we will leave the Extension SLOT in these archetypes to allow for annotations to be added in CLUSTER archetypes.
As removing these elements would constitute a breaking change, we will not make this change to currently published archetypes unless there are other breaking changes that need to be made.
The Archetype content & style guide will be updated accordingly.
Thank you all for good arguments and discussion! 