First, I lurve the new minimap. Keep looking at Sublime because of theirs, but just can't be bothered with a text-file config.
So, anyway, first issue is that when one clicks in the minimap, the minimap highlight is moved towards the click position, but the minimap is them moved so the clicked position is in the highlighted part. The result is the mouse is no longer under the clicked position, neither is the highlighted section, and one loses track of what the minimap is showing.
I think the proper action would be to keep the minimap static and move the highlight to where one has clicked (so the click can easily be turned into a drag).
Next, one problem with the minimap is that it takes up space. I would like to see it expand (horizontally) when one moves the cursor over it and then collapse when the cursor leaves, possibly after a short delay, much like an unpinned tool window (but without having to click to expand). Perhaps a thin line down the right in the collapsed state would be sufficient to aim at.
I appreciate that one can set the width, but there is a minimum width where it still remains useful, and when not being used it takes up valuable space.