Pros:

Awesome campaign poster
Good length
Well supplied
Good bot nav
Custom content
Eastern European feel
Good transitions
Well designed
Survival maps = fun
New defendable area in Finale
'The Passing' music fits

Cons:

Maybe some variety in weapons
Castle gate event could use more horde or could open faster
Some dialogue is out place

Conclusion:

Holy shit man, that poster is epic and full of win! In my opinion it's one of the best - if not the best poster I've seen so far.

My friends and I've played multiple times through many versions of this campaign and I can honestly say that it's been in my top 5 for a long time and once Versus is added I'm sure it'll stay there. 
The Eastern European music is a great addition to the campaign also glad to see that the crane event was changed, but I'm not too sure about the cable car thing. Maybe you could change it to one of those window washer carts, plus the building is high enough to have one. Problem with my idea is, I have idea how to make it into an event...

As far as the cons go, they're minor ones and probably easy to fix.
As mentioned by RainingMetal, a lot weapons throughout the campaign are static - like the pump shotgun the UZI in the first saferoom, for instance. Also mentioned before: some of the dialogue is out of place. So far I've only noticed Nick and Ellis say some about passing through the mill on the Freeway map, whilst passing through the wrecked fuselage [current version].

Thanks for all the support you've given and I'll update the review once versus is implemented, or when something else has been given a major overhaul.