You hit the nail on the head. Unfortunately, Google rarely talks about anything and when they do, it's not a mention of something as obscure as citations (don't get me wrong, I love citations ). We might be waiting awhile/forever on that one :/@JoshuaMackens @Stefan Somborac @JoyHawkins . Its great to use third party tools to build citations, We have to remember google changes its algorithm on a regular basis.
It would be good to get official word from Google of the weight the top generic citations carry opposed to hyper local niche specific directories where you can speak to the webmaster by phone or email.