The article didn't mention a spiritual successor to GOOG Reader. One interesting way to increase G+ use would obviously be to embed Reader functionality into G+. Stick a RSS feed into a circle. Of course its probably too late, most/many users already abandoned them. I went to Newsblur (and paid for it) and am pretty happy overall.
The theoretical GOOG babble product should also, in addition to whats listed in the article, include GOOG voice, somehow. GOOG must have dozens of "products" that all boil down to "send / recv a message" and I would like them to merge into one.
They should just buy doggcatcher as the best in class podcast fetcher and rename it "dogg-oogle" or something, and mush that into the "babble" or "g+" as per above.
I still have never found a place to try goog wallet on my nexus 7 in person. I have fat stacks of cash so you'd think there would be some interest in getting some of it. Most of the "lifestyle" vendors don't apply to me as I don't drink coffee or hang out in convenience stores and airports.