I'm not sure an optimal implementation of the pattern requires onerous changes but it seems like one of those things where even if I'm right about said optimal

I'm not sure an optimal implementation of the pattern requires onerous changes but it seems like one of those things where even if I'm right about said optimal implementation, learning how to get all the details right such that you get to that state is exceedingly non-trivial and the world seems to be divided into people who've already had the relevant "aha" moments and for whom it's now Just Obvious ... and people like us, who know just enough to blow both feet off ;)