I’ve been Featured Author for a week, but only my Followers Increased..
I would say, Featured Item definetly.
I think Featured Item is much better. As for me, I always check new featured item, but never do this for featured author. I think I’m not alone. Moreover, featured item stays 4 weeks on home page. Featured author – only one.
featured item = exposure jackpot
featured author = (exposure jackpot * 3) / 4
Featured author gets exposure of 3 items but the time span of exposure is 1/4th of the featured items