the suggestion of an exhibition in Internet that you and others made is very interesting. As I know, in the next few days it will be discussed in one of the meetings of the direction of the House of World Cultures. Anyway, it takes a time to analize the possiblities of organizing such a project, but I'm sure that there will be a decision when the forum re-starts in February.

Referring to the adaptation of consumer icons by artists, here are two examples from Colombia, presented in "Universes in Universe":

Antonio Caro's famous work "Colombia" in the style of the Coca Cola writing. He also designed the logo of "Columna de Arena" (edited by José Ignacio Roca):
http://universes-in-universe.de/columna/col1/col1.htm

Germán Martínez Cañas presented in the last Biennial of Havana a series about violence, based on the comercial propaganda of Marlboro and other companies:
http://universes-in-universe.de/car/havanna/centro/e_martin.htm

Joana,
referring to the deconstruction of stereotypes, mentioned by you in relation with the exhibition in Dresden, there is a lot of interesting material in the works and concepts of Guillermo Gómez-Peña, see, among others:
http://www.telefonica.es/fat/egomez.html
Mexterminator-Website - http://www.echonyc.com/~confess/
The Dangerous Border Game - http://www.sirius.com/~jrg/danger.html