Best place to play tennis, best audience... Logical imho
(maybe a little biased I have to admitt
Sorry, I can feel you are indeed biased. Good for you, because you are living in that region, but Swiss Tennis actually promised that next time it was going to be held in the German part of Switzerland,, but the problems are not worse audiences, worse place to play tennis,, but simply, the halls are occupied for maybe other sporting events like ice hockeys. And also those possible halls didn't have big enough capacity. But, Palexpo Geneva isn't the biggest hall, St. Jakobshalle in Basel has 9000 or more seats and Zurich's Hallenstadion has even more, I think. It is just a bad timing.
If DC was held in St. Gallen for 3 or 4 times in a row, I would feel really sorry for the fans from your region...