Honestly, that's two things that have been missing from SR since 5th edition started, really. The first is campaign books, like Universal Brotherhood, Renraku Arcology, or Emergence. We had Lockdown, and then... nothing. Some missions, what seems like a half dozen magic books, the matrix, ware, guns, and gear books, and the corporate book. The plot is done in a scattershot approach, it seems, with noodle incident type references here and there, but nothing tying it all together, until suddenly everyone's fighting over the scraps of NeoNET's corpse. It is like trying to watch TV when someone is changing the channel between four stations every 30 seconds. Because you have limited word counts, people try to touch on NeoNET, the Corporate audit, the Lockdown, Dragons, crazy magic, headcases, bugs, Aztlan, the rest of the big 10, Brackhaven, Seattle Underground, Denver, and the list goes on, and trying to get them all into the same book. This leaves people with literary whiplash, and no clear grasp on what is going on.
Second, we really, really need books like Threats and Loose Alliances. The Threats books took several of the big plots going on, and gave a solid update on them, including both in game and out of game knowledge. It covered 14 different topics, several of which tied into major metaplot threads, while the others were all interesting on their own. But they were all labeled as 'be aware of this shit'. It advanced several plots from the pages of adventures, and tied them in together, while also setting up future works (one can see now how the chapters on Darke and the Blood Mage Gestalt set up the Big D's Will and the Dragonheart trilogy), and did so in a way that helped players and GMs tie those advancing plots into their own games.
On the other hand, Loose Alliances was a godsend for anyone trying to create a background for their character, or for GMs who wanted a run to involve someone other than the go-gang of the week, but didn't want his players to be pissing off the same Yaks or corporate Mr. Js too soon after their last run-in. All those organizations, across all different types, with some info about ideology and allied groups. With the changes since 3rd edition came out, this desperately needs an update.