I can understand why some people might want this, but if it actually happens, my next laptop will probably be a Thinkpad. I need a professional desktop replacement, and the current MacBook Pro is already too thin for me in the sense that it can't accommodate an Ethernet port, and it throttles heavily under load. It also doesn't have enough USB ports. I don't know what Apple's definition of "Pro" is these days, but it's definitely not the same as mine. After using Macs for about 25 years, a Thinkpad P50 is probably in my future.
Honestly, it
is going to happen, though. There's almost no chance that the new Macbook Pro would be thicker than the one now. Truth is it's most likely going to be slightly thinner than the one now. With that being said, I do know that Macs really used to be aimed with the traditional meaning of the word "Professional" in mind, but the new "Pro" is just a moniker to mean said machine(rMBP for example) is simply a more powerful version of the version without the Pro moniker(Macbook). It's kind of obvious Pro =/ Professional users, rather Pro just means more powerful compared to the non-Pro model. That's all. Kind of like how Surface Pro means just a "more powerful Surface", rather than an workstation aimed at people who need 32gb ram, and more than a 15W processor, for example.
The thing is Apple doesn't really even try to market to the Professional market anymore. They market to "creative professionals", which literally just means people who delve into art, music, maybe a little bit of photoshop but ultimately people who create content in the form of entertainment, art, music. It's unfair to say Apple doesn't care about Professional users anymore, when Apple literally shows you it's a changed company than it was 1-2 decades ago. That's obvious they're not really aimed at industrial, science, etc professionals anymore, but said professionals still linger because..?
There's actual companies who DO focus on traditional Professional users, and they aren't hiding it. The Dell "Precision Mobile Workstation" line, ThinkPad line, etc etc. So why not jump ship, instead of saying how Apple isn't something it was a few decades back? Macs are bought by "non techie" people who use it for college and in coffee shops nowadays. Heck here in Manhattan I can say almost every college student that is female owns a Macbook or Macbook Pro. A lot are friends of mine, and they have no literacy in anything technical. They get it because of the easy to use UI, social media, facetime, and imessage. And guess what, a majority of them major in English, Music, Education. However almost all guys in engineering, csci classes (Not being sexist, these classes literally are like 90%+ male) here use windows workstations. It's just an interesting observance, that's all. Almost all of my real techie nerd friends who are enthusiasts about performance have been Windows nerds. It's even funny because the Mac vs PC ads some years back have the stereotypical tech geeky nerd as the PC guy, and the cool hip fashionable guy as the Mac guy.