Just as a piece of Information about Mosques.

A Mosque is not just a place of worship but a statement about the wealth of the community that worships there. The more the community earns the more elaborate the mosques can be. It is not a requirement of mosques to have a minarette at all it is just a way of showing that the community can afford it indeed why stop at one when you can have 4! If you go into the small villages on your next carpet tour of Turkey you will see the basic mosque without minarette and if on your next trip to Istanbul you stop off at the blue Mosque you can see how elaborate they can be.

So there is no religious argument for having them especially in Switzerland where there is no call to prayer anyway. That said there is no really acceptable argument for dictating the shape and size of a religious building. It is like saying that you can build your church but it must be hexagonal...