Maybe if you could spend some time defining the "feels right" aspect, this would go away.

I often find myself in situations where someone wants to break the UI I like, because they're used to something else.

It seems that most of the time, "feels right" just means "it works like I'm used to in other software". So: GMail, Outlook, whatever. Which is sad.

I wonder how would you react to "TheBat!" or Pegasus Mail?