BIP39 24-Word Seed Phrases

It would be awesome to offer users the option of either 12 or 24-word long seed phrases when creating a wallet for improved security.

Currently, MyEtherWallet offers 12 or 24-work seed phrases in addition to an optional 13th or 25th-word passphrase.

Workaround - Import Seed Phrase (Passphrase Not Supported)

To use a 24-word seed phrase in MetaMask (MM) a user can create a wallet with an offline app/tool and import it into MM.

However, MM is not able to import wallets with a passphrase added as the 13th or 25th word for instance.