As per the thread title. Apparently they're looking for a Planescape adventure pitch for the e-zine in the current submission window for such things.
I might. But between never having published an adventure, nor being the most adept person in the world on 4e mechanics (and it being a bit late to invest the time into learning the system at this point), I might leave this one alone. But damn is it tempting. Really, really, really tempting.
I would to anyone who wants to write this to just write, and then use the DDI tools to deal with a lot of the 4e mechanics for monsters. Skill challenges though might not be covered under those tools, and can be complex but they're quite flexible within the framework.