I don't consider the screw a problem. They have been using it on the EAB for years now and no one considered it a problem. Fancy blade exchange mechanisms add bulk and are prone to problems/breakage. As you said, this way it's very secure and doesn't wiggle. And you can service it with a SAK. Even a small VIC Classic is enough. And most of us have at least a 58mm SAK of some kind on us.
I don't consider the screw a problem. They have been using it on the EAB for years now and no one considered it a problem. Fancy blade exchange mechanisms add bulk and are prone to problems/breakage. As you said, this way it's very secure and doesn't wiggle. And you can service it with a SAK. Even a small VIC Classic is enough. And most of us have at least a 58mm SAK of some kind on us. I could see it improved though simply by making a cut out in the scale and replacing the screw with a thumbstud screwed into the hole where the screw is. That way you'd just have to unscrew the thumbstud to replace the blade.