Basic stealth addresses can be implemented fairly quickly today, and could be a significant boost to practical user privacy on Ethereum. They do require some work on the wallet side to support them
So how easy is it realistically? I hope it's not going to un-ergonomic like PGP where novices are sometimes seeing to be pasting their private key into e-mails and sending things in plaintext which should have been ciphertext, or otherwise leaking info.
I imagine you have to be really careful not to mess things up here.