I don't get it either. I mean, if he really wants to make me happy but can only build in the context of G+, make a "Reader" tab and open up Reader in an iframe

I don't get it either. I mean, if he really wants to make me happy but can only build in the context of G+, make a "Reader" tab and open up Reader in an iframe that takes up 90% of the page (outer frame optional). There's nothing about G+'s layout (or mission?) that will be conducive to feed reading. This is like asking me what I like about burgers so you can make a better salad.