Hypothetically, wouldn't the best Signal archiving be to make the custom client auto-add an archiving "user" to all chats, with that user only connected from se

Hypothetically, wouldn't the best Signal archiving be to make the custom client auto-add an archiving "user" to all chats, with that user only connected from secure archiving machines? Then convert archive user client text to whatever government encrypted form on that machine for long term storage? Curious what the best way of archiving with Signal's security model would be.