I did I waited for months dreaming of getting a DD, then one day I realized that if I wanted something to happen I had to make it happen myself. So I suggested one of my tutorials and I got a DD for it after that I got three more DD suggested by other people.
I think a DD is sadly not always about how good you are, but about how popular you are. Not everyone knows how to suggest a DD, then of those that know few people actually suggest DDs regularly, so it takes a lot of views, watchers and luck to get that first DD. I found that suggesting myself gave me that initial boost of exposure I needed, so I'm glad I did. I think there's nothing wrong with it, you're not featuring yourself, you're merely suggesting yourself for someone else's consideration.
i've always been thankful for the journal features i've gotten, i can't imagine suggesting myself for DD. i can understand why some people would, but i have a problem with some of the DD's picked simply bc of quality; how could i ever suggest my own work when i only have a point and shoot and there's soooo much better, more deserving pieces out there? lol