Does this mean we can regain the backspace-to-go-back that's been everywhere since forever, but was killed by Chrome because of instant search?
But hey, cmd+q to quit immediately, with "warn before quit" off by default is a great idea. No need to look at that one or make it possible to change the key bind. Never mind that it's one key away from cmd+tab.
This is the kind of stuff you get when you make decisions based on A/B testing.
I probably could have been clearer in my original comment, my apologies.