Was there too for the 2006 gig Well, just my personal opinion: I wouldn't advise going to Leipzig. I think the place is ugly as fuck, but the Ruhr area has its very special charme. It only should be made clear to anybody going there not to expect a BEAUTIFUL place. But it's a COOL place. And there's plenty of interesting places more or less around the corner. Cologne isn't far, Frankfurt neither, plus many more intersting things to do.Yeah, the 2003 tour was kind of weird concerning the choices for venues in Germany. It even put them off playing Berlin for the next eight years (although Berlin crowds have always been famously difficult).
For all I know, Leipzig has changed significantly since 2003 though, so I guess it will be a more successful gig this time around.
Of course, the Dortmund gig would have the advantage of going to the only venue where not one but two official live videos were recorded. I was there for the 2006 gig, and I mean, it was okay. I just wouldn't recommend going to the Ruhr area to a person who's going to fly to Germany specifically for this gig if there are nicer options available.