The ONLY practical use I have seen for this change is when you are scanning a body that has exactly ONE other body orbiting it, in which case you can scan the planet/moon/whatever first and then zoom out to have the cursor pointed directly at the parent body. If there is more than one body orbiting the parent body, having the cursor point directly at the parent body when zooming out actually wastes time (with the amount of time wasted being proportional to the number of additional bodies that need to be scanned).
Considering how frequently there is more than one body orbiting a parent body (gas giants, distant stars, etc...), this small change results in a net waste of time. Please revert the zoom out function to its previous behaviour.