BB kind of reminds me of a mix of Android and Symbian. The hub does look handy though, WP could implement that with a L2R swipe pretty easily. Could double as a notification center.
The Hub is also a battery killer, at least if you wish for it to keep you up to date on everything. You can alter what you want to sync and how often, but sync too much and the phone dies a quick death.
My friend in VZW corporate sales has said that clients were unimpressed with the Z10 for numerous reasons, but a big one is testing has shown it has a lot of security holes. There's some talk that BB rushed out BB10 (odd considering how long it has take). They've had serious QA problems. I expect we'll hear more about this in the coming month.
There are a couple of neat features and good ideas, but there are also problems with it in build quality, battery usage, and overall performance. From what I understand, Verizon will be doing some advertising, but not throwing any major weight behind it. Can't confirm it, but I've heard that it has a bigger cost to Verizon than the iPhone.
I think the Z10 is a decent phone, but I don't think it's a savior for BB. I think they will be in panic mode before the summer is out. I do know that VZW will continue to push Windows Phone in corporate sales.
I wouldn't mind it if the Z10 did well, especially at the expense of Android and iOS. I think BB10 is superior to both of those options, but inferior for most uses to WP8. The Hub is useful, but bland. Easy to access, but blah in design.
I'd be interested to see an expansion into what SurfCube is doing for web browsing in creating a 3d menu space on the phone.