Nebulous
Legend
You... you can't be serious. I mean, it took four fairly-small-print, thick books just to catalog the magic items in 2e and before. And since then, we've had tons of new ones, including at least four (!) entire hardbacks that were simply new magic items- the 3e Magic Item Compendium and, in 4e, Adventurer's Vault, AV2 and Mordenkainen's Magnificent Emporium. It's literally impossible to fit it all into the DMG, even if the book contained absolutely nothing else.
To be fair, MME was good and had lots of lore in it. But AV and AV2 are, indeed, super boring.
Oh, I didn't explain that well, I meant all the DMG magic items from the past, not every trinket from every supplement ever created. And not even 4e, just 1e-3e. As long as they don't leave out any flametongues or vorpal swords or wands of wonder....oh, yeah...The Wand of Wonder. THAT'S my pick! Give us a wand with two different tables of mishaps.