Well Jonas, That sure is an interesting idea and really quite a departure from what we usually see in a paddle design. I agree with Yellow Canoe the real test will come when you paddle with it and have a chance to compare with a more traditional design. But even untried, I give you full marks for trying to "think outside the box" and trying to come up with something new.
Given the nature of experiments, it's almost certain that some aspects can be improved but there probably are elements of your design that may prove to be just the thing on some future project. You never can tell. I've got a whole box full of various scraped projects that I tried to make work, only to find what I thought was a good idea turned out to be a waste of materials. For now. One day I may be bending over that box, rooting around for parts for something and discover if I take this part and put it on there.....I can make it work!
I like to imagine that first caveman: the whole tribe is gathered outside the cave, blinking in the sunshine and scratching fleas. He's off to one side with a flint nodule between his knees and whacking it with a rock. Somebody hollers "Hey Og, leave that thing alone, those splinters that come off are sharp and somebody will stand on them and get cut!" But Og is looking at one of those sharp splinters and thinking...."If I wrapped some hide scraps around it so I don't get cut then maybe.......
And the next thing you know we've got the light bulb! Keep the ideas coming!
Best Wishes, Rob