How about a pluggable architecture for audio filters? Then people can independently create stuff like "Concert Hall" and "Kareoke mode" and "Echo Chamber" -- or perhaps even more intelligent audio filters with options, like "Concert Hall with configurable size" and "Echo Chamber, configurable number of echos" to make it sound anything from a bathroom to a cave. And perhaps some truly intelligent stuff like "noise cancellation" ... the possibilities are endless. :-)

What you think?

Calvin