I was wishing for something like the Galaxy Layout, but how do I get at it? Binding the Galaxy Layout context menu to LeftAlt+M or Leftalt+C didn't work for me (these worked as M and C on Galaxy Map, respectively). It's probably a case of PEBKAC on my part, but I'm stuck.
You don't actually have to bind anything:
1) Go to the galaxy map (not planet view).
2) Open the context menu (alt-right-clicking empty space should work for default bindings; I think middle-click also works but that may be a custom binding of mine).
3) Click on Galaxy Layout in the top-level context menu.
4) Click on Alternate Layout in the Galaxy Layout context menu.
5) While holding shift, left-click-and-drag planets around.