Nice little addition.   Can you change the zoom range?  I couldn't figure that out. It seems fixed on my devices but looks more zoomed out on an earlier facebook post.

‌‌Also what happen when you get to within the range set for the approach widget to appear.  Does the radar get hidden or appear alongside?

You cannot currently change the zoom range of the traffic radar. It will zoom in gradually if there is an aircraft approaching which is a threat, though.

It doesn't appear or disappear on its‌‌ own; it's just there (on tablets) or brought up manually (on phones where it's fullscreen).