I just loved Self 3.0!
This is a huge improvement and I think you have crossed a threshhold where the system is now a lot closer to Smalltalk implementations in maturity. Many people who are rather conservative have expressed interest in trying out Self when I showed them 3.0.
The animations are very entertaining ( and well thought out ) and do not tire with repeation. I really prefer to program graphicaly to typing what reminds me of LISP ( even though I adore LISP! ). By working with methods one at a time people can clearly see that Self looks almost exactly like Smalltalk.
On page 22 of "How to Use Self 3.0" there is a footnote saying "Menus do not reflect the philosophy of concreteness we espouse for the ui." I had the same problem with a "visual smalltalk" I designed many years back. What I did was to call them "remote controls" and stop worrying about it ;-)
The syntax on page 27 of "The Self 3.0 Programmer's Reference Manual" does not seem to me to allow nesting of annotation as mentioned in the text. I guess the text is right? How about a 'Man:' annotation for Unix fans? :-) An 'Examples:' annotation might be nice too. Maybe these things should go into the module objects as they refer to a whole group of objects ( an application ) rather than just one.