I love that the very first picture is of Tree Style Tab (add-on). I have been using it for years and absolutely can't live without it. I wish they would find a way to disable the now-superfluous top-tabs in quantum, but I'm sure it can be done in time. Everything does seem faster and more stable since the update, I'm happy they got through the transition without pissing off a huge amount of their die-hard users that were tied to old extensions, by giving enough time for crucial things to be ported.