In the case of the keyboard, they weren't going for faster, but longer lasting. We're all moving towards a future where mechanical keyboards will be pieces shown in museums, because like with the spinning hard drive, mechanical parts are failure points to be replaced by something solid state. The latest trackpads are perfect examples, where Force Touch makes it literally impossible to tell that the pad isn't actually moving / clicking.
Have you spent any time on the new rMBP's to be able to say the keyboard isn't "fast"?
a) i do own many apple devices. i'm owning CEO, i've personally purchased (from my own money) and worked on all kinds of apple devices worth at least 30+ grand within the last few years, so be assured i know what i am talking about. i'm using cMBP 2012 hires because i consider it to be the best machine for my needs. in short: i'm using a mid2012 not because i don't have any other devices or i cant afford another device for myself, but because it's a great machine and can be upgraded far above the top 2016 macbook pro (talking about ssd disk space, being en par with 16 gb ram). so please go and find another argumentation. some of my employees do use the rMBP 13", it's a very nice machine but unfortunately doesn't offer enough cpu power (no quadcore :-() and available disk space for my needs (i do love the form factor, though!) ... "you cant afford the new machine this is why you are whining" is not an argument ... never was.
b) faster, better ... were your own words, not mine. obviously the "better" *should* apply to newer keyboards, faster for cpu etc. i was assuming that was clear, as it was your own words. didn't want to confuse it with typing speed, wasn't my intention. never mind.
c) longer lasting keyboard? sounds like a non-issue to me. ... we're daily using 8-16 hours mainly 2011 and 2012 macbook keyboards. rMBP keyboards are good too (until 2015) - never had a single issue on any device, never replaced a keyboard. however, had replaced a 2007 MBP and multiple 2011 cMBP mainboards due to design/production faults. but yes, if i don't like to use a keyboard because it sucks (like the 12" macbook keyboard), it will probably last even longer ;-) this only reflects my very personal opinion. ... but ...
d) as a matter of fact, the new 2016 macbook style keyboard, like the 12" macbook keyboard, is considered not as good as the older keyboards by many people. just go and watch the reviews. some other people might like it though, as usual. (i do know some)
"design over usability" is the wrong way to go. my opinion. besides that, this is an incredibly beautiful computer, absolutely agree on that. i just wouldn't want to work on it and i can't support the direction apple is going. it's a dead end. AAPL will tell us, i'm curious.