Some users have been complaining because one of the android wallets derived from Eclair (but not ACINQs own android wallet) now requires that feature to work at all (see #1541 for example).
So we should probably implement that as well. See spec at https://github.com/lightningnetwork/lightning-rfc/commit/046f5acb1619bccf167e5539f144433495f1486b.
OK, I'm working on this; it's queued behind the HSM changes to separate the payment key (which channeld et al do not need) from the other keys.
This was addressed in #1854
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OK, I'm working on this; it's queued behind the HSM changes to separate the payment key (which channeld et al do not need) from the other keys.