To be fair, zoom out and white dead tanks have been explicitly greenlit by this topic http://forum.worldoftanks.com/index.php?/topic/519659-fair-play-policy-qa/
But that might be outdated, who knows anymore.
Edit:
What makes me weary of "spotted vehicles direction on aim circle" is the fact that it can show multiple vehicles simultaneously, which they have stated is not ok for "direction indicator for closest enemy"