It's just a matter of preference. It doesn't bother me at all. You can get a rear bumper that covers the crack. Or you can do what
@Starrs suggested to me and paint the section in the crack black so it is not readily seen UNLESS you are looking for crack! There is nothing noticeable at the front wheel well (to me). At the side under the doors you can see the pucks if you get low enough. And in the rear wheel well, you can see the color of your body between the frame and the tub, but that's another area you can paint black and it will basically disappear. It really doesn't bother me at all, there are tradeoffs, and for me, this is a very valuable mod for going ahead with my build, it gives me lots of options I wouldn't have without it. So, there it is folks, look at my crack in awe! It's beautiful!