Comment by Terr_

> peak audio

Nah, there are plenty of other things, like positional audio. I remember (through a pleasant haze of nostalgia) my old A3D-based sound card in the 90s as being even better than modern EAX stuff.

Potential improvement in that area can be both through simply adding speakers, and through tuning per-speaker output to forge better audio-cues. (To wit, Head Related Transfer Functions applied to headphones, possibly even with custom parameters for different peoples' heads.)