@Imperious:
I am not actually arguing that point, but its covered under an assessment of intent or purpose
Also, I had done an extensive survey of this issue back in 2003 and the conclusion was that what these projects amount to is safe conduct and not of material issue.
If it were not true and you don’t believe ME, then why have not all these so called “unauthorized axis and allies expansions/variants” have never been sued? They have millions of them since 1981.
IL, check Chapter 1, section 106:
"Subject to sections 107 through 122, the owner of copyright under this title has the exclusive rights to do and to authorize any of the following:
(2) to prepare derivative works based upon the copyrighted work;"
That includes all the millions of axis and allies expansions/variants that you mentioned above. Avalon Hill simply ‘tolerates’ them, meaning that they will not pursue any legal action, because they know it is on their best interest to have them around (to generate more interest/more buyers for Axis and Allies).
This situation is already what happens regarding fan fiction (I’ve written quite a few fanfics regarding computer games and that’s how I learned about this subject):
http://en.wikipedia.org/wiki/Fan_fiction#Legality_of_Fanfiction