Because 1984 was an election year, it would need to have an omnibus crime bill of its own. Polls showed that crime was the most pressing domestic issue with the public, so everyone running for reelection needed something to tout on the campaign trail.
At this point, there wasn’t any real debate about crime policy. It was really only about which party could come up with the most creative ways to empower cops and prosecutors, strip suspects of their rights, and show they were more committed to the battle than their opponents were. The most significant provision in the newest crime bill again dealt with asset forfeiture.