How much do you really need?
What I generally need could be filled by a SAK or multitool without the blades. Sure, blades are needed all the time, but we might as well give up on carrying those onboard an airplane anymore. So what's left is the rest of the SAK/multitool minus the blades. These are hard or impossible to find. I wonder why? There would certainly be a market for them IMHO.
The closest I found was this little gizmo, which I bought recently:
http://www.amazon.com/gp/product/B004EL4MLY/ref=oh_details_o02_s00_i01?ie=UTF8&psc=1But I would still prefer a normal sized SAK with extra tools thrown in where the blades would have been. Actually, even without the air travel restritions being in place, I would still prefer an SAK without the blades. And I would carry a seperate folder for my knife needs. I never liked the blades that come on SAKs. They're OK for cutting threads and stuff, but I consider them more toy add-ons than real knife blades. The blades are thin, most of them don't lock, I dislike the blade shape, and they are made of lower-end steel. YMMV.
Victorinox, Wenger, Leatherman, Gerber ... are you listening?