Its modulation system, wavetable engine, voice synthesis features are all innovative in certain ways. In addition, you can't ignore the UX, being tied to creativity even if it's not part of the sound. Vital has shed the traditional skeuomorphic approach that dominates software synthesizers and proven a lot of new ideas for connecting its features, visualizing its processes, and streamlining user workflow. Similar to what Arturia is doing with Pigments, though Pigments still paints inside the lines a little more.
But it doesn't necessarily have to be innovative to be worthwhile, anyway. Vital has a comprehensive breadth of features for a digital wavetable synth and is often being compared to Serum, historically the marketplace leader in the space.
Vital and Helm are easily the most-recommended free synths I've seen in a couple years of learning music production. I think this might be the first negative/"meh" response I've seen to Vital.
