We're looking for well-known ZK individuals to run nodes in order to maintain this service and have a large threshold parameter (the larger, the more nodes an attacker would need to compromise to compromise the L2).
So we only need to trust those people running the nodes, and hope that some or all of them are not bad actors? 
I appreciate you working on privacy built on top of bitcoin, but I was never a fan of ZK based setup unless it is trustless.
For now we're just running on testnet. As far as I know something like this didn't exist until today, so now you can use protocols like zkLogin or zkMail to lock your Bitcoin in zkapp and unlock them with a proof of login on Google or a proof that you received some email 
No more g00gle please.