Hide&Seek on Nostr: I think putting a hard cap on OP_RETURNs would be the single best non-risky thing to ...

I think putting a hard cap on OP_RETURNs would be the single best non-risky thing to do. However, I think bitcoin adoption will cause blocks to be mostly full a few years from now - and the fees to be much higher. So it would only buy some time & avoid harmful content onchain.