I agree that following expected patterns is a _prima facie_ reason to do something. That said, in this case: 1. The downsides of following it are severe, and 2

I agree that following expected patterns is a _prima facie_ reason to do something. That said, in this case: 1. The downsides of following it are severe, and 2. People often expect slightly different things, so you often don't get the benefits of following convention.