The keyboard is a huge negative for me. Why would I want a significant chunk of my screen space taken up by a keyboard on a device that I'm aiming to use primarily for reading?
You missed out! The Passport was an excellent phone. Great hardware and the OS was nice. And the KeyOne (android) was probably my favourite phone ever.
Had you used any BlackBerry phones before it? In my opinion the Passport was considerably better than other BlackBerry phones from the couple of years before it, but it was so much worse than the older BlackBerries were (at least in the context of what was available at the time) so much better that people who had used BBs for years found the Passport frustratingly bad in comparison.
Many people swear by the Passport, but the BB Classic in easily topped it my opinion. The best phone keyboard ever made and the phone itself could serve as a blunt weapon if it came to it.