This is great stuff, congrats on launching.

Instead of simply generating a fixed sound for each event, have you considered synthesizing a continuous multi-track score? Like a baseline piece of orchestra music being modulated by the events. Or something like Brian Eno's http://en.wikipedia.org/wiki/Generative_music

Also, perhaps consider streams of data other than discrete events: perhaps continuous metrics like CPU utilization, or stack traces from profiles, or percentiles of latency, or ...