An hypothesis about much of the criticism for this change, and similar movements of outrage on the Internet. It's amateur social theory and goodness knows we don't need more of that, but I haven't seen it said like this: People naturally feel anger in their lives (about home, work, politics, health, etc.) that is not socially acceptable to act on; to varying degrees, they need an outlet. It's not a new phenomenon; so…
No outrage, and for all I know, they've made the best moves to maintain their marketshare, but once the extensions get comparatively neutered, the only things keeping me on Firefox are inertia, the awesomebar (I haven't played with chrome a lot, but Firefox's awesomebar works really well, and I use '*' to narrow it down to bookmarks all of the tmie), the real dialog boxes for managing history and bookmarks (vs Chrome's pseudo webpage thing), and inertia.
So I can understand the frustration of 'power-users' with their changes, which seem aimed to make it a more mass-appeal product.