I hope you don't mind a little constructive criticism. I love most of what you've done. Especially carrying the lower bodyline through the tailgate with the door skins and of coarse the rounded bed corners
In the end you'll do whatever you want to, but I always like to hear the opinions of my fellow body-sculptors, whether I agree with them or not (usually not).
I was looking at the "gate" more and what doesn't seem to work for me is that it looks too tall. Maybe it's because the gate and pan are now one continuous piece. Obviously you are not going to change the top edge. So, if you make the purple curve more like the yellow curve and roll the bottom of the gate/pan under it would reduce the overall perceived height back there.
I'd love to see some low-direct-rear shots and a straight side shot ...or you can just say shut the eff up and do your thing...
