I see it as a potential for a new movement in mysticism. I feel you would get a lot out of reading some Weil - I spent a few hours yesterday just reading some of her essays. It gets heavy on the Christianity in some of her later writings which isn't to my own personal taste, but if you read it as a general mysticism it works just as well.

You make a good point on the question of what I mean by religion. I would say, I want to avoid the dogmatism associated with mainstream institutionalized religions. Something like what I assume you mean by "fixed ontology". Weil, on the other hand, argues that we should embrace it and argues that there is value/beauty in the ceremony, rituals and rites offered by churches.

She really occupies an interesting space. Her contemporaries were the likes of Sartre and Simone de Beauvoir. I think that secular humanist crowd was totally unwilling to entertain mysticism. Also, Marx was ardently against religion seeing it as a tool of oppression. So Weil was unique in that she was aligned with them on political and economic issues, she was a grass-roots labour activist to the core, but she was also deeply spiritual and mystically inclined. Her criticisms of Marxism are heavily inspired by her belief in a transcendent divine that is completely absent from normal leftist/materialist view points.

It is sad that she died so young, at 34, before she could more deeply explore this political philosophy. It is interesting to consider what kind of political ideology you might get if you take the core understandings of Marx and even the post-modernists but you re-inject a non-dogmatic mysticism.