plone/plone.app.contenttypes — comment on commit 265cf33023e30d3cf06d768e4892b651737a1ceb
File:  line 0
By pumazi:

Maybe I misunderstood the requirements for this package. I was under the assumption that we wanted to match functionality for functionality with the basic archetypes content-types.

We may also be getting into an area where we start to discuss core vs a Plone out-of-the-box (OOTB) solution. In this case I would say presentation mode is not part of the core, but instead a part of some OOTB distribution of Plone.