I'd be interested in joining the book club, though there are some thick tomes being recommended. In keeping with the theme, I might add Timothy Mitchell's "Rule of Experts: Egypt, Techno-Politics, Modernity". I have only read an excerpt of it for class, but I found it to be very well written and quite interesting; I'd want to read the entire thing myself.
Now, in my understanding of book clubs, the members discuss the various elements of the books being read--things like plot, prose, characterisation, etc.
I'm wondering what exactly we'd be discussing in our examination of pop history/science/economics. While I haven't read the books on the list (save a few excerpts from Piketty), I gather that there are really two elements that we can talk about: plot (narrative, whatever) and methodology. I can't imagine it being a worthwhile discussion to critique Jared Diamond's use of metaphors or Piketty's verb tenses.
The problem I envision is that these dialogues will inevitably devolve into tiresome and lengthy attempts by university students to demonstrate their excitement at their studies and prove their worth as academics by searching high and low for alternative sources and critiques to reproduce in the forum. Worse still, I worry that the majority of participants will simply agree with the books and regurgitate what they have read in newspaper reviews or on Reddit. Perhaps there will be a couple of contrarians, but then the discussions will turn into dogpiling on the minority.
The main reason I predict such difficulties is that the books on the list discuss empirical matters. The trouble is that a criticism of an empirical book requires empirical proof; what's at stake is not the subjective meaning of the narrative or the characters, but ownership of the Truth. To criticise Morris, say, is to declare his facts false. Such a criticism would require some sort of side research (perhaps this critic has a JSTOR account and too much time on his hands), and a response to it would require yet more. Post lengths and reading lists grow longer as the arguments continue, but still no new insight has been added and the silent observers who lack the time and inclination to stroke their egos for an anonymous Internet audience become bored.
Maybe we'd be better off following Hazel-Rah's lead, reading works of fiction. Watership Down has more elements we can discuss and also a work to compare it to (The Aeneid). Rather than just looking at the plot, we can also talk about the characters, the style, etc. and we can draw parallels to Virgil's epic. The discussion of fiction can branch out from the "objective" truth, reaching into various people's subjective experiences and interpretations. To be quite honest, I can find critiques of Piketty from more respected academics than the people who post here; I'm more interested in how others react to Nabokov's Humbert Humbert or Kafka's K. These are discussion items that don't have empirically verifiable answers, and deferring to experts is much less fruitful here.
Aside from fiction, we can also talk about philosophy. Works by Kant and Hegel don't really have empirically verifiable answers, and there is plenty of discussion to be had on either side. I must admit, I am partial to Voltaire. Religious works too could make for wonderful discussion, though the worry again is that some people might steer the discussion towards whether or not God exists.
A more practical benefit to what I'm proposing is that I'd be more likely to find fiction titles on #Bookz than non-fiction titles, though I haven't tried looking for popsci.
Anyway, I suppose I'm in the minority, but I thought I'd share my thoughts.