Yes, the door cards are cheap and flimsy in look and feel, especially around the storage area. They could have rounded the edges or introduced a decorative moulding to nicely finish off the edge.
The parcel shelf is fine IMO. In fact, on a hatchback, it's only there to hide the contents in the boot. If it was too heavy or over- engineered, the retaining straps could snap.
I have been considering doing something, with the help of Auto Audio, to improve the 'apparent' quality of the lower part of the door trim.
Apart from this single grip, albeit a serious one, I am eminently satisfied with the design, material quality and fit and finish of the interior.
I am sure the Mk7 will be even better as it will have to compete with the new Mercedes A Class which will be a very Premium proposition.
I am seriously considering a change from VW to MB.