I have been pondering the commonly expressed truism (confirmed by personal experience) that the bassist is in the worst position to actually hear what his/her bass sounds like. I frequent several luthiery websites, most of which are guitar-centric. Some guitar makers have experimented with sound holes placed in the upper left bout of the top or in the upper left side/rib. The concept is that more direct sound will reach the player. Has anyone ever tried building a sound port into the upper left rib of a bass? Structurally it seems possible. Obviously this would have to be discretely incorporated for aesthetic reasons, but is the concept meritorious? Any thoughts from our esteemed luthiers?