Good point about the level control over the individual taps. Those effects that you mention can extend into simulated fast / fingerpicking. I find it encouraging that Eventide is talking about the capability of having all of the Factor algorithms available, interchangeable presets (with other hardware), plus the proverbial "much, much more".
Even beyond all of the bells & whistles, the H9 is a smart move for Eventide. It allows for someone to customize an effect pedal, and still integrate that into an already established pedalboard rig. I might already have more delay effects than I'll ever need, but still make room for an all-in-one kind of pedal with targeted additions. The relatively small physical footprint doesn't hurt, either.