Oh christ. I'm pretty sure my sysadmin friends would murder anyone that tried this on their boxen. As an engineer, while I appreciate the amount of shiny going on here, I doubt that adding yet another layer of tooling requirements to dealing with logs is the right answer--this could lead to serious ax-sharpening of picking the best JSON-to-readable scripts, and you can bet your ass that'll be different on every machine, install, site, etc. etc.

All that being said, I could see this being hilariously useful in game development. Having little JSON crumbs dribble out during playtesting and QA would be really handy, and that is an area where data mining is actually quite useful. Having a trivial way of sorting through crumbs by issue or tester, and then being able to, say, project the bugs into an HTML5/WebGL-based tool for devs to use would be really nifty.