Since last SenchaCon in Austin where we got this idea, we've been working on a way to simplify the bug reporting process for Ext JS, Touch and our own components. Right now, we're currently trying to finalize our new 1.0 beta release of our Fiesta tool - an online crowd sourced test suite and bug reporting tool. Anyone can register and submit bug reports in form of runnable code snippets. It's essentially a blend of JsFiddle and Siesta - targeted at Ext JS and Sencha Touch testing. Here are some screen shots of the current state.
You can easily create a new test, and define the scripts and CSS files to 'preload' for the test.
Here's how it'll look for a simple Sencha Touch test. You can test any of the SDK samples in both Touch and Ext JS, we've included those as templates to allow for easy test case creation. Screen Shot 2013-05-17 at 11.37.29 AM.jpg