Personally, I'd daresay it doesn't need it, because the two are quite similar now, with the only exception being the classes. They're similar enough that I've been running a scenario I call "Arkham Squad" at gamedays for years now, which is not in the Lovecraft spirit, but more of a "Special Unit 2" or "Angel" vein. Take d20 Modern (or Grim Tales, the two work almost interchangeably), mix in the threats, spells, and horrors from the Call of Cthulhu d20 book, and you have Cthulhoid horror where the heroes get to kick butt right back at the creatures of darkness. For more traditional Cthulhoid horror, keep the 10 for Massive damage saves, and introduce the Sanity system (or Grim Tales' horror system), and you retain the life-and-death edge of the original game.