I know this is a shallow question... I'm a new-ish bass player but improving rapidly. I know that speed is overrated, and useless for its own sake. I'm trying to design a routine that maximizes my time, and am deciding whether or not to explicitly work on speed. So... I'm talkin' 'bout your opinion on sustained speed requirement for fundamental bass chops (i.e. blues, funk, rock + jazz standards). What does a working bassist need in his/her arsenal?