After completing the "Cursing Like a Whitch" (index 80, still haven't reported to Margia Sycora), Foedus Locutius returns the same generic dialog about being afraid no one in the FG knows the place as well as Foedus does and tells the player to ask around Dondril (which the player clearly already did as the quest was completed).
There are three fallen lines in the topic "my trade" and ten fallen lines for "Background", resulting in (most of?) the speakers never saying their unique lines. Check the bottom of the dialogue tables for these topics.
I have not checked most other topics, so this could be a good idea.
In the Unwell Traveller, a misc quest in Bodrum, Wesencolm seeks to get cured of a common disease. In his dialogue, the town priest (tr_m4_golvyn_saryon) offers to teach you a healing spell. However, he neither teaches it to me in dialogue, nor does he have spell for sale. Either of these two options should be added.