This suggestion is three-fold:
1) The Government should be utilizing a multi-layer repository for information with semantic indexing to improve how data is gathered, stored, and made available to the public. Data.Gov is a great start, but government data needs to be integrated better with outside data and the whole thing needs to be more intuitively searchable.
2) Each data-supplying entity of the government should have a clearly noted Data page, and these pages should be linked out from the central repository (Data.gov)
3) Each departmental data page and Data.gov should have both apps and mobile optimised sites available.