Display an inventory of releases contained in the database and the tables in those releases
Use case I'm thinking would be: Does Census Reporter has the QT-H1 - General Housing Characteristics table from the 2000 census and the 2010 census?
Good idea. In short, we have only the "B" and "C" tables for the 2012 ACS release.
We don't have any DP, QT, S, R, or GCT tables. Some of those we could synthesize (in fact, our profile pages are heavily modeled off of what's included in DP01) but the Census Bureau doesn't produce those as downloadable data.