I can provide an analogy as to one thing which I like about mac devices, and something which I liked, but has been progressively cheapened to the point of not really being what it once was.
In a nutshell, apple pays attention to the fine details. They differentiate themselves in the little things, and when you add it all up, it counts for something much greater than the sum of its parts. Something really small and stupid is screen aspect ratio. Apple still pushes 16:10 on the macbooks, whereas every other manufacturer has gone to 16:9. For certain people, this is a bigger consideration than most would think.
I used to be really keen on thinkpads, while they were IBM devices, they were a 'goto' device which wasn't really equaled by much at all. My last thinkpad had an awesome keyboard layout which was one of the best around to move between a standard desktop layout, and portable nature of a laptop. Similarly, go find me a laptop with dedicated function row keys! In certain heavier duty applications, F1-12 keys are important. It's a real pain to have to toggle or press multiple keys where you otherwise could press one.
Next, backlit keyboards are ok, but thinkpads had the 'thinklight' which was above the display, the LED was even adjusted to have light go to the side of the laptop, which is really handy if you have documents to the side. While they probably could have kept the light, it kind of meant that a lip is required on the lid, and that allowed for latches to hold the lid down. I presume in order to cheapen production, the latches went, hence no need for a lip and as a result the light went as well.
16:10 displays were mentioned above, and they were around for a short while, but now all lenovo laptops are 16:9, and in short, they look too wide. I don't like them, I'm prepared to spend extra for 16:10 or now 3:2, but noone really makes suitable devices with those aspect ratios.
There was even a period where lenovo removed the dedicated buttons for the accupoint/trackpoint mouse. I much prefer it than a touchpad. They put them back when, what I assume was a little too much consumer backlash occurred.
In a really interesting thing, a couple of years ago, a person at lenovo ran a series of polls on what should lenovo's 25th anniversary thinkpad be. Basically what came of it were that customers wanted a laptop in the old style, with decent performance, but the old keyboard layout, 3:2 display and modern hardware. Can google it about the 'retro thinkpad'. Haven't heard any news about it though.