Sadly it's more likely I'll just get some stupid pony instead.
Sure, it can be a spy app, designed to listen and record! But then the OS can expose a per-app maximum wake setting. Yes, it'd look like a spreadsheet instead of a happy user UI, but that'd be a solution, instead of this "oh we can't do anything" excuse.
Because the OS shouldn't be making assumptions about applications' interaction models. People tend to write apps that OS creators never dreamed about. There are legitimate reasons for resource usage (camera) to continue without user interaction.From the top of my head, I can imagine writing a baby-monitor app that uses camera to stream video to my phone in the other room using wifi.
The resource-limiting heuristics have to be impossibly good, otherwise it gets in the way of useful apps.
Face unlock, dash cams, baby monitors, live-wallpapers-that-make-your-phone-look-transparent, security apps that snap a picture when someone fails to enter the correct unlock code and emails it to you, etc...
But replace camera with GPS and it's the same thing. Or audio. Or motion detectors. Or just really frequent alarms to poll a server (see IRC apps for an example)
