There are actually a few things I like about it. I like the shutter release feel better. And I like the directional joystick better than the four cardinal direction D-pad on the main body, I find I can change the AF point faster.
As for you get what you paid for, and why buy cheap gear to compliment a thousand dollar body. When I had my D80, I had 2 knockoff batteries and they were indistinguishable in terms of quality of build, charge time, and how long they lasted compared to the Nikon battery and they were like a third of the price. So... yeah, sometimes cheap things do work out. And though I have yet to track one down, I've read that the Tokina 80-200mm f/2.8 is as sharp as the Nikon model at a third of its price.
And it's not so much that I don't like plastic products. My fist DSLR was a Canon Rebel XT, and let me tell you I put that thing through hell. Dropped it underneath a waterfall, dropped it several times elsewhere, got mud all over the shutter release, had dog bite and lick the lens.Eventually one of the buttons on the back fell off (forgot which one now) but it was still pretty functional. Stuff that I wouldn't put my D7000 through, that Rebel XT went through and I was thoroughly impressed by how sturdy that plastic body was.
But this... this MB-D11 plastic is not the same. I can tell by holding it. It feels like holding on of those non-grade Gundam models. The stuff that was so easy to destroy I could do it with a pair of scissors and no effort. I feel like if this falls, it won't hold up like the Rebel XT, rather, just deform as soon as it makes contact with something, anything remotely harder than itself.
EDIT: One thing I wish it did have, but isn't on the real one either so I guess I'm not too hurt, is the Fn button. I tend to use that a lot.