It's the exact opposite for me!
I truelly hate showing people my mac because I hate being seen as a "artsy - non scientific minded - brat.
As a "scientifically minded" brat, I'd like to inform you that Macs are all the rage in the science world. Virtually every lab in my University is equipped with Macs. Everyone I know, that is immersed in lab work and whatnot, not just taking science courses, uses a mac.
And this isn't just my University. All the guests I've met from other Universities informed me of the same thing. So yeah...you can be sciencey and have a Mac too!
Not being argumentative or anything, just sticking up for my crew

Fo' shizzy.
Edit: So I should at least say something relating to the topic instead of completely hi-jacking it.
I like the MacBook Pro as it is. I'm not really into "change" really. I fall under the "true and tested" crowd rather than the "change is good" crowd. Two things I really hate and don't want to see incorporated into the MBP:
-Magnetic latch: I just like the feeling of the button. Plus that little light on the button looks better there. If they make it magnetic they'd have to move it to the left side of the case (I'm assuming where the MacBook has it but to the opposite side) and that would look worse!
-MB keyboard: I HATE that gosh darn keyboard! One of the reasons I bought the MBP is because of its keyboard! Blah!
and oh! (double edit), they better keep the disk drive where it is as well as the ports on the side! A while a go I saw how someone wanted them to put the ports on the back of the laptop and that made my blood boil (not really, but it did make me cringe)!
To tell you the truth if they changed the MBP to the way most people on MacRumors want it (MB keyboard, magnetic latch, other stuff) I might not buy it. Just buy a Vaio and BLEEEEEP (can't say due to infringement laws (i believe that's what it's called) but it has something to do with putting a certain OS on hardware it shouldn't be running on).
Other than that I guess even though I don't want change...I can get used to it. I would like a bigger speaker on the 15" though...