I agree with you totally Richard. The additions to your list would be bassists such Paul McCartney, Bootsy Collins, James Jamerson, Nathan Watts, Jack Bruce, etc.
I'm a recent BIAB 2008 owner and learner and love the huge variety of music attainable (to say the least).
PG, if you could add any or all of these bassist programs to your already healthy line-up, I think many bassists would be able to take large strides in their playing and learning abilities.
Thanks,
Lionel