Missed opportunity to get rid of SPF. What I want to my DMARC policy to say: if someone is sending you an email that claims to be from my domain and it's not signed by one of the keys I have published under my domain, you should reject it, regardless where it came from.
And on the receiving side, the policy is similarly simple: if I receive any unsigned or unaligned email, I will reject it.
Edit: to clarify, I want there to be an option where I specify my DMARC policy to explicitly tell well-configured receiving servers "ignore whatever I have configured as my SPF record, only look at the signatures". There will no doubt be a long tail of mail servers where I will still need an SPF record for them to accept my mail.
Edit2: Another feature that I feel is lacking is ability to give dkim selectors a scope - e.g. this key is only valid for these particular From addresses.
And on the receiving side, the policy is similarly simple: if I receive any unsigned or unaligned email, I will reject it.
Edit: to clarify, I want there to be an option where I specify my DMARC policy to explicitly tell well-configured receiving servers "ignore whatever I have configured as my SPF record, only look at the signatures". There will no doubt be a long tail of mail servers where I will still need an SPF record for them to accept my mail.
Edit2: Another feature that I feel is lacking is ability to give dkim selectors a scope - e.g. this key is only valid for these particular From addresses.