I really like the Quick Decks and the entire concept of them. They are pretty easy and straight forward to use, look great, and if you print on nice heavy paper, will have a pretty good life span, even longer if you decide to laminate. There doesn't seem to be any limitation as to what you can build with these products as long as it has a "typical design" (ie: Is not an "organic" ship, has typical sections, etc). It you wanted to depict uneven walls or strange shaped rooms as you might find in a ship that was mined from an asteroid, it might take some creative work on your part since all the tiles have straight walls. But you could easily depict the insides of a ship made from an asteroid that have been "finished."
Also, keep in mind that many of the sections can easily be used for things other than ships. Hallways, state rooms, barracks, armories, cargo hold areas, etc. can all be used for regular buildings, starports, or even space stations.
The only suggestions I have to make the products better would be to include directions on how to build a common ship, like a Type S scout. Which pages you need to print, which parts to cut out, and how to arrange them. This could really help some people who might look at all the parts and get overwhelmed. Also, possibly include an index with thumbnails to make it easier to find particular components.
But those are just minor quibbles when you consider all the cool stuff you can do with this bundle.