I guess one thing, or myriad of "things" I'm hearing with very fast super-duper machine gun fast kick is being able to lay down something equivalent to a very precise roll on the kick, and then play over it on snare and toms. To me it's an impressive sound when Annika does it with a band. I appreciate it when layed down in the context of a jazz/ fusion band. Now, I don't like fusion jazz at all I think it's boring and meanders and often goes no place, but as a style of playing drums I think it sounds remarkable. And you can take that lightning fast kick and play traditional jazz doing it, too, in solos and trading. I can't but a good player could. I like that sorta jazz that's my cuppa. Anyone have any videos of a drummer trading or doing solos with a more traditional jazz band playing those machine gun kick licks?