I would like to read an article about Wild Magic. (After all the magazine's named after it.)There is precious little known about it. What exactly is wild magic? Where does it come from? Or who was Nahal? There are many spells named after him (or her).
How about an issue on making the weak monsters of D&D dangerous beyond the early levels? Stuff like Tucker's Kobold's come to mind.
"Behind the scenes" stories from when the IE games were originally being developed would be cool.