Re: It could be their best chance for a solid return...
The problem with that is that Android (recent versions only) and iOS are also quick and slick. App support is missing and overall user opinion is negative. Also the hardware specs on the phones aren't great and the prices are higher than Android equivalents.
BlackBerry doesn't have to put out a product that's "as good as" the competition at this point. Unless their OS is mind-blowingly fantastic they're not going to get past the app gap and even then they still have to deal with the negative associations BlackBerry has picked up over the years. It would take a miracle for BlackBerry to pull out of this.
As an example, there are only two reasons Windows Phone is still competing and they are:
1. Microsoft is willing to throw billions of dollars at it.
2. Windows Phone's UI is genuinely quite different from Android/iOS and very good for the simple/integrated organizer tasks.
I've used BB10 and it has a few novel ideas but it doesn't feel like anything that couldn't be done in an Android skin. I personally believe that BlackBerry should have released the interface as an Android skin instead of a full OS. That would at least solve half their problems, but they seem to be locked into the mindset that it's still 1999.