If passphrase support will be added, can you consider implementing a method to counter potential keylogging on the host computer? Like maybe a scrambled-letter cypher on the Ledger's screen that changes each time?
we could also enter it directly on device - we do that for the recovery, even if the auto completion makes things easier here
1. Ability to send bitcoins to multiple addresses at the same time which helps to cut down transaction fees. Just like Blockchain.info's multi-send feature.
this will be available quickly on the wallet firmware, a bit later on the Chrome application.
2. Abillity to sign any addresses generated on my wallet.
same thing here
3. Ability to directly exchange BTC to ETH and vice versa as an when an user feels safe to do so.
this should typically be done with a wallet integration (for example with Shapeshift), we don't plan to support it in the Chrome application for the time being.