Your line of thinking doesn't make sense. People want smaller, thinner devices and part of doing that is making things as compact as possible. Look at TVs, there are very few user serviceable parts these days on them and people aren't complaining about that. Notebooks go the same way. You want thin, fast and light, you have to work to get most of the stuff on one board, not spread throughout.
There's only so much space to fit stuff and I'd rather take performance over a slower system that is user serviceable.
I DONT want thinner !
What I want is a decent keyboard and a longer battery life. I want USB ports, ethernet port, SD card slot.
I want a laptop that in 12 months time I can upgrade the RAM or SSD and not be forced to buy a maxed out machine from the start or buy a new machine when my needs have changed.
My Current MBP is from early 2011. I upped the RAM myself to 16GB, I replaced the old slow HD with an SSD all at a cost of a damn sight less than Apple would charge.
Apples new keyboard is horrid.
Apple no longer makes a computer that I would be interested in, and thats sad.
I will be looking at a hackintosh , but I suspect in 10.15 you will need to have Apples propriety security chip to run so I am more likely to be heading to Linux.
Apples slow abandonment of OSX Server is obvious, so for my needs at home a Mac Mini running OSX server will need to be the same Mac Mini now running Linux.
I manage a couple of hundred Macs at work and I am having to plan an exit strategy. Apple does not allow for their OS to run on non Apple hardware, so using a VDI that can be spun up for a few months to do some high end number crunching is all Linux based now, I can get a 16 core Ubuntu VDI with 256GB of ram and 10TB of storage for just a few months if I need it almost overnight. With 10Gb ethernet its feasible to directly connect Mass Spectrometers, DNA Analysers, Bioinformatics data sources etc etc directly with these VDI based machines. We are already doing this for Graphics intensive work.
So we are slowly shifting users from Mac dependant software over to Windows and Linux.
The Mac Pro is still ages away, the mac mini too and the iMacs are just too closed. Even when these products come out, Apple is still just skating to where the puck was. For big business, universities, high end users the reality will be a long way away from Apples vision.