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I wasn't clear if it should be a New web site not listed in DMOZ, or a current DMOZ listing that needs rewriting.
I'll submit 3 new listings for sites not listed in DMOZ, in the category I am applying for. It's pretty sparse in there. About 10 listings.
Craigster
Rewriting an existing bad description can work too, but I would explain what you're doing in that case. Otherwise the person reviewing your application may not understand that you chose a listed site on purpose. And if you can find three unlisted sites that fit, then that's definitively preferred.