Considering that both cochear and retinal implants are currently in the 10s of electrodes, that would be really cool if those tiny electrodes can be adapted to that usage. That could lead in a significant bump in auditory/vidual fidelity for the patient (currently they hear something that sounds to us like out of a vocoder, and see something that looks probably like a quarter of a gameboy display).

Of course the end goal would be to directly stimulate the sensory cortexes, but we had decent trains before having decent planes.