I'm not quite sure what you're asking for. The new Rondel Dagger seems like a very good take on the traditional stiletto, as is the Colichmarde Dagger and the Companion Dagger to the Ribbed Shell Rapier. Cold Steel already did a great rendering of a modern stiletto, too--the Corsican.
Despite being a beautiful design, it didn't last long in the catalog. So presumably it didn't sell well, probably for the same reason that most long-bladed daggers don't fly off the shelves: Who can carry them legally outside of a military setting or an SCA event? Unless you're wearing BDUs or tights and a tunic, sheathed daggers tend to draw unwanted attention!
I'm unclear about the confusion over the new Chaos. It's simply an update of the M1917, a World War I design made strictly for up-close-and-personal combat.
The triangular blade was meant to make wounds that were difficult to close, thereby putting the enemy out of commission longer even if he survived. There's nothing utilitarian in the design. It's a weapon of war, plain and simple.
One of the reasons that I enjoy Cold Steel so much is that they take chances making products that are unapologetically weapons. They recognize and recreate historical pieces, but they also modernize some of those designs. They'll never make a mint selling them, but they make them for those of us who love the concepts and appreciate a well-constructed, updated rendering of an age-old weapon. It's what sets Cold Steel apart from so many plain old knife manufacturers. It also makes the Cold Steel catalogs fun to read, and a history lesson to boot!
-Steve