(for me it could be non-retina, 1440x900, I'm fine with that)
I think that's an important point - if you look at the "competition" (Dell XPS etc.) then the entry level options still have 1080p screens and you pay a significant premium for the higher resolution QHD/3k/"Retina-class" displays. Maybe they can do better than 1440x900 (1680x1050 would match the current default scaled 'looks like' resolution of the other machines).
If you mostly use your laptop at your desk, you can always plug in a 1440p or even 4k display and live with lower res on the road.
Of course, it depends what display panels are available at what price: 1920x1080 is ubiquitous in PCs now so it will be cheap (but its 16:9 ratio which is horrible for general use at small screen sizes - 16x10 is worth a premium).
I still think, that the current 13" air could be the perfect Apple laptop (size, battery runtime, keyboard, etc.); I MUCH prefer it over the current gen. Macbooks / Macbook Pros
I think the Air has the potential to be a "classic" design (Think: Porsche 911, Kenwood Chef Mixer etc.) even when thinner, lighter options are available (for a price).
I was recently in a PC store ovehearing a couple discussing laptops, and they liked the larger bezels and "wrist rests" saying that there was nowhere to hold the new designs if you actually wanted to use them as laptops.
Plus, for the moment, I'd take 1xTB2, 2xUSB 3 + magsafe over the non-TB MVP's 2xUSB-C/TB3 ports (one of which you have to "waste" with a charger unless you carry around a suitable multiport hub). Swap the 1xTB2 for 1xTB3 if you like, but keep the rest...