Really like the new Goto Symbol quick panel. Using it, I have noticed two possible issues, though:
1) The CPU usage of my Sublime Text leaps right up when the quick panel is visible, and it hovers around 40%. I hadn't noticed it before, but I checked and it is the same with the Open File in Project quick panel.
2) Also, the symbol list includes anonymous functions in languages such as JavaScript. Since the list is not alphabetical this may be a deliberate decision but I think I'd personally prefer it to omit them.