Optimizer

Slow moving enterprises in technology world are an age old phenomena. Even - long established, waterfall pattern following - enterprises are acknowledging this and speeding up their cycles. In the current world of fast pace technology, one cannot justify by giving such examples.

Taking 5 months to enable trading doesn't seem like "adoption"

Response tab can now have any amount of width in Nightlies. https://bugzilla.mozilla.org/show_bug.cgi?id=956357

Defaults are being altered to produce less spams as we speak : https://bugzilla.mozilla.org/show_bug.cgi?id=966692

Firefox also provides a suggestions list for CSS properties and values in the rule view and the markup view of Inspector since Firefox 25.

That is why the decision has not been made yet, they are discussing. Every user has different preferences, and maybe you will get to have both the options :)