Based on my understanding of David Cooper’s characterization of Existentialism, I believe two of my strong convictions may be somewhat heterodox within Existentialism.
First, Existentialism should never seek to be a norm. I do not believe many members of the public ought to pursue the Existentialist ideal. Rather, I think most should play their public roles according to the ethnomethodical rules of their various social settings, as long as doing so allows them to live reasonably rational, effective, meaningful lives. If things are going well for a society, nobody should be condemned for identifying themselves with their social role. If the everyday enworldment of the public isn’t broken, everyone should be encouraged (though not required) to adopt it and live by it.
Second, existential responsibility is not only, or even primarily to oneself. Existentialists should not treat the public as a threat to evade. The public should be seen as its responsibility. If the popular, everyday enworldment of the public is broken — that is, if the life it affords is unreasonable irrational, ineffective or nihilistic — it is Existentialism’s responsibility — its very raison d’etre — to repair or redesign it.
I continue to view philosophy as a sort of secular esoterism, responsible for maintaining, reforming or remaking the various exoteric enworldments available to the public. Most of these enworldments are small and local (to a social circle, an organization or even a gathering or project), but sometimes responsibilities expand to larger scales.