I would like neural NLG researchers to focus on more challenging datasets, and make some suggestions.
Farewell to Richard Kittredge, who died in early April 2019. Richard was a pioneer in applied NLG, and also an inspiration to me personally.
People who use corpora to build NLG systems need to understand what is in the corpora. The widely used Weathergov corpus, for example, probably contains computer-generated texts rather than human-written texts. So learning from it is essentially reverse-engineering a rule-based NLG system.