I agree Bob. It would be great to see new tools with those marvelous locks.
Here are a few more strange, odd, and esoteric candidates for this topic.
Topeak McGuyver Tool. A weird crossover from the bicycle multi-tool, into something more for a survival tool. I don't think this was very successful for one main reason. The legion of bicycle owners looking for a bicycle repair multi-tool would be totally annoyed with the tool selection these offer. Besides, Topeak is a big name in bicycle repair multi-tool kits.
Switch - Customizable Pocket Knife. Not sure if this one is a failure, but I reckon they didn't sell too many of these.
Resolve Series. Something from the weird and wacky files. Brick like specific multi-tools. I don't imagine they were very successful overall.
I am a sucker for functionality, and when I see something like this, my senses take fight and I have to have one. Not sure why, as you quickly realize how are you going to hang all of this off of a belt...shouldn't they give you a baldric or something?
Flip Plier type multi-tools. Yes, you get two pliers for the price of one...but you can't fold it away for storage....sigh.
Speaking of failures...the Coleman Prolock. My first good MT. Loved the design of removable tool pods. Problem is, I think nobody bought it, and they never came out with newer tool pods.
In the same vain...the CRKT Flux. I got the sense this tool wasn't all that popular as they haven't designed any new modules for it...or I am mistaken and there were none ever planned...which seems an odd shame of sorts.
Loggerhead tools Bionic Wrench Multi tool. Failure or success...can't say. What I do know is that this is one weird tool, and it is next to impossible to find in my region...which leads me to say it may not be all that popular.
Another from the weird files. No matter how much I like them, I am certain they were a failure at the retail level. Yes, I am talking about the Schrade Navitool.
Bonus points if you have the I-Quip Navitool.
Here is probably one of the weirder Gerbers...the MP650 Evolution.
Or how about the Wenger Business Tool series?
And to finish this up, the Victorinox Auto Tool.