I like traditionals for many reasons. One of the biggies is that the non-threatening appearance and LACK of quick deployment means I use them, even play with them, in public more. You've gotta admit that moderns have that "self defense" (shall we say) sales pitch.
Moderns do have some advantages with one being that you get more knife for your money. They are more mass produced and less hand crafted.
There have been a plethora of threads on "modern traditionals", or traditionals with modern features like screw constructon or modern materials. There was just recently a thread asking why traditionals cost more than moderns.
I got to looking at a modern knife and realized that they are really rather simple construction. I'm actually surprised that I used to trust my hands and legs to liner locks. A simple little springy piece of steel pops over to lock it open and a little ball in a detent to hold the thing closed in your pocket. Still, it's ingenious in it's simplicity and low cost construction. It's designed to be mass produced on CNC machines and quickly assembled. A slipjoint is a much nicer little machine albeit an old fashioned and more handcrafted one.
Now I couldn't help but wonder what you would get if you threw out all "traditional" rules and made a still traditional style knife with as much CNC mass production and as little hand work as possible. In other words, two hand opening, slim carbon steel blades, and no pocketclip, but no rules on materials, fasteners and the like. Something made to walk and talk like a traditional, gosh darn it, made to walk and talk like a pocket knife, but no other rules.
Seems like it wouldn't be hard to make two one piece aluminum "sides" and screw them together with a spring and a blade or two. A nice hard anodise plating and some checkering could make it fairly attractive. You could even use a modified liner lock if that was cheaper to manufacture, just with a much bigger ball and detent since it would open with two hands. The idea is to bring slipjoints striding boldly into the 1990's.
This video describes a different ball and detent scheme which could replace a spring. I don't like the knife's appearance, thickness, etc. but it's an ingenious idea.
http://www.youtube.com/watch?v=uYPNXYsgNtY
You would still want handcrafted slipjoints also. This would just be a good, decent knife without "cool factor".