Code review comment for lp:~leonardr/launchpad/rename-grant-permissions

I'm rejecting this for clarity: Once a comprehensive discussion has been had, *if* this is the right approach, I'll happily and joyfully revert my vote.

It may be that this patch is capability, not policy, in which case it may be ok to land as is - I have merely read the overview which was sufficiently worrying for me to highlight the need for more eyeballs on this.