Satya Yuga is supposed to be this era that is all Communitas, as there is only one caste in Satya Yuga. A spiritual regeneration is what's needed, and as you said, it's true established religion can't provide that. It also maybe doesn't have to be a planetary event: if you can save your local environment, maybe that's enough?
Structure vs. Communitas/Antistructure
Satya Yuga is supposed to be this era that is all Communitas, as there is only one caste in Satya Yuga. A spiritual regeneration is what's needed, and as you said, it's true established religion can't provide that. It also maybe doesn't have to be a planetary event: if you can save your local environment, maybe that's enough?