Are you interested in taking a modern SmartForm debugger for a test spin?
It's a simple Chrome extension designed to radically improve the debugging experience. After installation, there's no configuration, simply open Dev Tools on a SmartForm and you'll be debugging.
The extension is in Chrome's Webstore
More details can be found here
Looking for feedback...
One issue we found yesterday, is it won't load if Chrome isn't in English. Updating localization is in the works.