"There are a few things that are critically missing. One is tooling support — having a debugger that actually works, performance tools that tell you where the memory is running out."
"The second big chunk we are struggling with is operability, runtime diagnostics information. ...there aren’t as many great tools to support that, as well."
Could be me but looks like there is an oppertunity for professional HTML5 performance and bug-tracking tools.
The problem is it's dependent on the runtime. A debugging tool for Chrome, wouldn't necessarily work in Safari or IE.
You need the runtime vendors to provide them. Chrome has been really good at this, but are there tools for mobile Safari, Android browser, IE10 or mobile Chrome etc
You can, but what about android browser (pre chrome), or webview instances inside an application (phonegap), or people using Amazon Silk on a kindle etc etc
"The second big chunk we are struggling with is operability, runtime diagnostics information. ...there aren’t as many great tools to support that, as well."
Could be me but looks like there is an oppertunity for professional HTML5 performance and bug-tracking tools.