New
#20
A lot of the theme developers don't feel that there is plenty of notice at all, so I wouldn't suggest that. A lot of developers actually share the belief that XUL isn't really slowing down the browser, it's just a management decision. Mozilla simply needs to tackle the Chrome market, which is not the power user.
In 2003, the goal was to "stand up to the man" which was Microsoft and Internet Explorer. But that's not what's in fashion now. Mobile is. So that where the real fight is, and at present, Google has it sealed. And since no one really customizes a mobile browser, Mozilla likely figures why let users do that a desktop browser. Take "Classic Theme Restorer". Apparently, Mozilla loathes its existence, because it doesn't want users trying to kill the Australis interface. Mozilla wants you to accept what's given.
I would be OK with all that if (a) I could put tabs below the address bar, (b) unhide the forward button, and (c) retain access to about:config.
:)