Kill the Air, keep 2 verticals of laptop Macs available as your hero products. Make the Air, and out of production models still for sale on some other page (refurb/old models). Apple is started to bloat their product line like when Sculley was in charge.
Just look at iPads. The Pro should've been set apart by it's industrial design. The Pro and the Air now look pretty much the same without the size to differentiate. Or even a different set of color (Pro colors) would've been enough. Macbook Air, and Macbook are sitting in the same realm. Iphone 6S, 6S+, SE, S, C. I'm an avid Apple follower, and usually can throw out Apple product facts pretty quickly, but as time goes on, I get a little confused, and think about what came out when, and what has a Retina Screen or not. Apple get your product lines, in line. If a Apple head like me is starting to get confused, you need to slim down on the information.