I can readily believe that there have been implementation problems that are unfair to gun purchasers. Fixing them, and ensuring good-faith implementation, should be a high priority.
As long as federal law enforcement is involved, the implementation will not be in "good faith". I doubt they've changed the system at all, just purged the data on approved applications more frequently, at least from the active database. They'll not want to spend the money to rebuild the system the way it should have been in the first place. If they tried, Diane Fineswine and Chuckles the Cereal Killer would scream bloody murder, as they already have over the destruction of records of "terrorists" who purchased firearms.