For a comparison, here are a few pics of my car moderately lowered. I'd actually like it a little lower but this is my daily driver so I have to compromise a little. The "profile" one was taken more at body height so you can see the gap. If taken from up top, the gap does not "look" as bad. I also have on a very subtle lip and mild sideskirt to bring down the body line a little to compenate for the ground clearance height that 20s added.
I would also prefer a lower rear bumper but this is how it is from now. The exterior will most likely get a tweak in a few months. ;)