Before Monday’s games, Keith Jones and Jeremy Roenick provided some in-depth analysis of the Matt Moulson - Thomas Vanek trade, which you can view in the video below:
Generally, the two seem positive about the trade from both perspectives, although they also seem to think that the New York Islanders face higher risks (Thomas Vanek leaving) and higher rewards (Vanek’s ceiling for scoring).
(And yes, this took place before Moulson already began silencing critics in his Buffalo Sabres debut.)