Explain the problem as you see it
With focus/cursor inline on some node, cmd+. let's me open that node up as a full page (or "zoom in"). If I want to keep zooming, I now have to use the arrows to move downwards, skipping subtitle and view options, to the children of the node.
Why is this a problem for you?
This is unnecessarily cumbersome.
If I zoom into a node, what are the odds I want to edit the "title" or node itself, rather than work on the children or keep zooming into some child?
Suggest a solution
It makes more sense to me, to have to focus on the first child-node after cmd+. which then allows to navigate to some child-node via arrows and the keep zooming with cmd+.
With a couple of cmd+, I can zoom back out, no need for change here.