>Often, developers place too much of thier own bias into a UI.

I do agree with that. Being a good designer requires objectivity in this regard.

>BTW, in a perfect scenario - I probably would not have a developer design UI's. Most developers simply do not do a good job of designing UI's. Most of the time - the reason can be traced to a lack of end-user involvement.

Not to mention a certain degree of contempt for users. :)