Apple is really genius. But I don’t see it’s “going up” completely because you lose screen estate in getting the 14i MBP instead of the 15i MBA.This is the beauty of Apple marketing. You can get the air but if you bump up beyond base it doesn't cost much more to got to the 14" MBP with M3. So then you say I will get M3 MBP since it is only a little more buy then you can get a really nice M3 Pro MBP 14" for $1999 so you may as well just spend a little more and get that and by the time you are done you walk out with a space black 14" MBP when you were going to get mid spec M3 MBA. It is perfect for pushing you up the ladder and buying more than you need.
The $1999 14" MBP will be the most popular M3 MacBook going forward I bet you even over the cheaper base model air. Of course the base model air is easier to get but I think the masses will go for the model I suggest because it is not crazy expensive and when you are already spending over $1000 it is hard not to go up the ladder because it is a purchase you may keep a while. So people are willing to spend more to increase satisfaction.
In the end though if the air had ProMotion and the ram and ssd upgrades were $100 instead of $200 then the air would sell way more than the pro's and people wouldn't over buy. Apple knows this.
For me that’s a no go. The MBA got the golden size of 15 inch.