2007 called, it wants its arguments back -- for those were the same arguments made in favor of Blackberry and other crappy experiences compared to today's touch smartphones.
It's true that BlackBerry the company was unsuccessful at selling phones since its heyday many years ago, but they're not in that business anymore, and haven't been for years. These days, they license the BlackBerry brand and patents to companies like TCL, who've been relatively successful with phones like the KeyOne and Key2. Just because BlackBerrys (BlackBerries?) form an almost insignificant share of Android devices doesn't mean they're not good.
If I can already type 90 words a minute, what problem does the glass solve? I have a glass screen on my iPad, and I never type on the screen keyboard for serious work.
I’ll give Apple the benefit of the doubt and wait to see this in the final product, but your comparison to 2007 is grossly inaccurate.
Apple has yet to put out a device in the post Jobs era that made me feel like I have to have this thing in my life.
There are not people enamored with old style smartphone / Blackberry / T9 keyboards that wear those covers during normal phone/tablet use.