I was thinking Sheboygan

It just sounds mediocre. But I've never been there, so maybe it's lovely, even though I assume there are Packer fans there.

If we want to go with a major league city past or present I would vote for Anaheim. I hear your arguments about Seattle but Seattle does not strike me as a mediocre city.

I feel like Indianapolis should be another contender. They are AAA, never making much noise I can recall in terms of major league consideration. Right now they are the Pirates affiliate and it looks like over the years they have changed affiliation more than a dozen times. Pretty mediocre.