I had a friend with a very strong New England accent. She got sick of people stopping her when she was speaking and saying it was cute, etc. She got rid of the accent. She explained "I would rather people listen to what I am saying than how I am saying it." She understood the accent was distracting from the message. Take it or leave it, but I think it is an interesting lesson.
I think you asked about shoes and whether loafers are OK. As long as shoes are clean and professional, I think they are fine, though most interviewees (I think) wear lace ups. I said I think because I do not believe I have noticed any one's shoes this interview season. That said, no need to distract. Go with something traditional - and get a shoe shine.