I agree, the tone controls on a the legend 8 were unnecessarily faffy. I am used to something a bit more simple, like bass / treble with a centre indent when they are flat. For all my ibanezes with bass, mid and treble, I almost always have them flat all the time unless something happens in the middle of a gig.
in a way, the G&L tone controls are good for that. It has bass cut and tone (ie treble cut). Flat out is completely flat, anything else reduces.
let the amp do the shaping, and the controls on the bass remove a problem