I'm looking more closely at WFRP 4e and I see that many of C7's products focus on the town of Ubersreik as the hub of a campaign. It's a fair-sized place with 6,000-7,000 inhabitants, and it has the strife of having the local lord very recently (seems the default intention is that this happened only days or perhaps weeks prior to the campaign's start) displaced by decree of the Emperor and enforced by his troops from Altdorf. In addition to the various plots in town, it's also located near the main pass leading to Bretonnia and has several dwarf holds (some in ruins) in the nearby mountains. And, of course, it's on a major river, so all those Old World adventures that start on a barge work in easily.
I'm not at all opposed to using Ubersreik as the center of my campaign, but I also purchased their Middenheim sourcebook, and I've always liked that city since my early days of WFRP 2e. I see a great deal that can be done with either location, but they really are not so close together that frequent travel between them would be likely. And then there's the fact that Middenheim lacks a river...
So, anyone have any views on Ubersreik? I'm really eager to hear from those familiar with the 4e materials, but I wouldn't mind hearing from those familiar with other versions too.