[undecidabot]

If the lack of action creators is a serious concern, then the one-liner-each action creator I suggested should be sufficient without adding much bloat. How would the ReasonML example deal with that change though? Can the variant constructors take in optional parameters?

Using Murphy's Law is not very convincing. Even with action creators Murphy's Law guarantees someone would have just constructed the objects manually anyways. Having to grep the tag is not ideal, but it's not likely to be a problem in practice.

I doubt that the bundle would be significantly larger (especially after compression). Using actions creators introduces additional (function call) overhead too (and that would be insignificant as well).