I haven't tried the IE9 tools extensively but I did notice that evaluating a JS object in the JS REPL will now let you see the structure of that object as in Ch

I haven't tried the IE9 tools extensively but I did notice that evaluating a JS object in the JS REPL will now let you see the structure of that object as in Chrome, not just display "{Object}" as it did in IE8. That was probably my biggest gripe with the IE8 tools.