Perhaps before doing such a major change, Mozilla, who hosts and awful lot of the extensions, could have done some code analysis on said extensions to determine

Perhaps before doing such a major change, Mozilla, who hosts and awful lot of the extensions, could have done some code analysis on said extensions to determine what APIs were needed to make a smooth transition. Saying WE can add suggestions is a foolish thing to ask users when they had a community of developers and the actual code to do an analysis on. Blaming users is poor form.