The "MagSafe 2" is a _prime_ example of Apple simply changing things (yet again) for no need whatsoever. The 1st generation MagSafe is _exactly_ the same height of a normal USB port, and Apple has included several USB ports on their new machines (right next to the power supply), so why do we need a "thinner and longer" power connector anyhow?
All this will do is make your previously-purchased power connectors incompatible (without using the new $10. adapter). Remember: the MAIN DRAWBACK in the first place is when it's tugged just a bit too hard it comes undone! Same thing when accidentally pressed against your legs! Now add an extra 1/2" adapter onto the setup and I'll bet it comes undone more often than it stays put! I ask you: "Why?"
Why has the form factor been changed at all? Standard USB is _exactly_ the same height as the existing MagSafe, and they didn't change those (to mini or micro) so it can't be an issue of "height"...
This is yet another example of Apple changing things simply to make their products incompatible with older generations. It's called "planned obsolescence", and was pioneered by the auto industry. I own at least six power adapters, and now they're all useless without a $10. adapter? WHY? Also add non-upgradeable memory (and internal storage), and you have the least-upgradeable MBP Apple has ever made in it's entire history!
I have a 2008 MBP that has ALL necessary connections built right into the machine itself (with no adapters necessary): MagSafe, Ethernet (a _must have_), dual USB 2's, FW800, FW400, full-size DVI, discreet headphone & microphone input (both optically compatible), plus a PCI card slot that I use as a multi-card slot (which for $20. reads SD, MemoryStick, and more), PLUS an 18x SuperDrive. Similar battery life and a REAL (not chicklet) backlit keyboard round out what I personally would call a _real road warrior_!!! No adapters necessary (even though Apple included DVI to VGA for free)...
What more could you _possibly_ ask for in a portable? This latest MBP is _not_ an "upgrade", it's a regression. This is only a way for Apple to suck more money out of your pockets. If only Steve were still alive today, he'd probably be rolling over about right now... All of this has happened over just the past 4 years? "25% thinner and a faster processor with very few ports"-- Are you kidding me? This is a radical "improvement" that somehow makes up for everything else we've lost in the transition?
Call me "Old-School", but I want my "Swiss Army Knife" of an Apple MBP back!!!