This Q&A was recently published elaborating somewhat on the reviews and rejections.
Basically they did confirm that they want reviews to go quicker, hence the sweeping up of all the backlogged reviews. They have also stated an interest target for the completion of the Fall 2013 review in early 2014.
The other tid-bit is that they have reiterated that each review is independent and should not be seen as a bellwether for other reviews. In this they specifically mention Zelda indicating: If another Legend of Zelda set qualifies for review, we will happily consider producing a LEGO set based on that project.
So in short, Cuusoo is taking steps to speed up the results and boilerplate rejection is now the norm.