World War II turns hot in South America!
This is an idea I will be using for a back story for several future builds but could make a good GB. The idea is that Germany and/or Italy take a greater interest in South and Central America, opening a theater of operations there by exploiting the animosities between Bolivia/Paraguay, Peru/Ecuador/Colombia, etc. Could be local surrogates or German/Italian expeditionary forces - could even be others (imagine "free Dutch" fighting from Aruba).
If we imagine this front being hot between say, 1940 and 1945 (or it could easily extend earlier or later), then it allows all SORTS of sea/land/air whiffery, from obsolete equipment soldiering on to new modifications (my first contribution will be a Colombian seaplane P-40). Even the Japanese could get involved. Plus it allows for really different camo and markings options. Nothing boring here!