The System
Well, the system is really pretty simple. After coming off five years of playing D&D 3.5, we were refreshed at the system's simplicity and how easy it was to challenge the characters without completely overwhelming them. I found as a GM that I was able to just naturally gauge my encounters without any form of encounter rating or challenge system. You get a really good feel for what the player characters can handle, more so I think than even with
4E, which we've also tried.
I'm not currently running it right now, as we have a player that's on hiatus, but I was recently asked if I'd run WFRP over
4E Forgotten Realms. That's a tough choice.
4E and
FR are both new and that is that allure, but I have to say, WFRP sunk it's teeth into me and I'm hooked.
In two years of running it, we've had one character death, and this was because they party made the mistake of attacking two very powerful spellcasters out in the open, with little or no planning.
The Campaign
As far as I'm concerned you just can't beat the Old World as a setting. Its dark and grim, but also accessible in that it "feels" like a real medieval setting.
The world can seem a little daunting at first, even the Empire itself can. Sigmar's Heirs was a good book, but it was more of an overview. This can be good though, in that it gives you a lot of room to work.
The Future
Fantasy Flight Games recently inherited the game system and we already have a new book coming out soon, Shades of Empire. It deals with the underworld of the Empire and it's organizations. I know more books are slated for future release as well.
If you have some more specific questions, feel free to ask. I'll check back and see if I can help.
Renshai