[IBCNU]

My experience is by definition anecdotal, but what I've found is as the team grows more and more work seems to focus on defining the types, futzing with the types, talking about the types instead of talking about features. I come from a Clojure/script background so I suppose I'm trying to say if (in building UI's) if you bake in strong immutability and a functional approach (like re-frame... but JS) types, to me, become less and less of a concern. Of course it's highly dependent on the business requirements.