The event calendar can look great, but only if content is extremely simple. If more than one event is scheduled for a particular day, the display resorts to text rather than showing a preview image.
Apparently “Archive” objects don’t include preview images or text.
On the other hand, summary objects don’t offer the ability to sort by ascending dates. My conclusion is that the Ad rotator should be left as is — it can still share images with Facebook — and the blog/summary setup should be used only for features of ministries.