I agree with you on this part but there is one more thing: Mozilla needs to change their way of thinking.
They were relying too much on extensions, left too many basic
features to them and now are suffering from draw back. Things like TabMixPlus or PasteGo should be rather offered as core functionality or at least given within some kind of "Firefox pack". If they do that at the beginning there would be less problems because it could force in users good habits of organizing things.
They made few bad decisions and now are trying to fix them. Or rather: trying to find someone to do it for them for "fame". I was always thinking: make something good first, extend it more later but Mozilla did it opposite way.
For me Firefox is piece of crap without any extensions installed. When it had came to live I needed 12 extensions to do almost the same stuff as Opera and I was just starting with O! Of course, many things changed, much more extensions are available now but F is still poor right after installation. I still think that extensions are great but, seriously, how many users spend their time to track all of them down? Adblock, NoScript - these are the most known ones. What about others which could help to solve "too much" problem? Users will know nothing about them without Mozilla forcing them but M prefers to advertise their hunting instead of browsing their own database.
As I've already wrote: it's mental problem.
Time to sleep now