I'd pick it up on sale. I like Windenburg. This is also the pack for which I played with the most pre-mades. At the time that I got it, I got really into playing with them so they all wound up throughout my save. I'm a few generations down from that now but I guess I liked them.
Sometimes I use the club system. Other people may use it more but it can be a handy way to put together a group. For example, recently I wanted more of my teens to meet each other casually, so I created a teen study group and let them meet up. It was a way of bringing together a specific group where I wanted them at the time when I wanted them to meet.
The CAS/BB is a little dated now in my opinion but it's a pack that made an impact on how I play so I'd recommend it.