The buttons need a strategy. The menus need a strategy. The application needs a philosophy.
I had a strange, but inspiring experience the other day. I had a meeting to discuss an app with an executive sponsor. On a particular step i accidentally left my silly text blurb that i wrote off the cuff as a placeholder. That reserves the approx space required for the actual, boring… well, professional text.
He paused to read the text and just when i was ready to explain its temporary nature, he said he liked it. It may not make the final cut, but it made someone pause because it gave the app some semblance of personality.
I dont think there is a wrong audience for content with some personality. An application with personality may even build a different kind of bond wirh users.