Never used movable type, but if somebody made a fast static website generator with a web GUI, a decent online editor and a good plugin system, along with an eas

Never used movable type, but if somebody made a fast static website generator with a web GUI, a decent online editor and a good plugin system, along with an easy-to-setup deployment system, why wouldn't people pick it up? Apart from the fact that they already use Wordpress, but this has no bearing on the dynamic-vs-static website generator debate. There is nothing intrinsic about static website generator that makes them harder to use. But of course, in this case you should not aim for the sexy "minimal" label (or better, write a GUI leveraging an existing system).