We know in our hearts that economic development and malaria affect each other. And we can make a pretty good guess at the variables involved. Snowden's book on the suppression of malaria in Italy lists them fairly precisely: literacy, education, agricultural productivity, government stability, etc.
For me, the end of malaria will also coincide with the availability of affordable and reliable electricity, and improved housing with metallic screens on the windows and doors.
If we look at the history of malaria suppression in the northern countries, we should be able to make a chart showing when these factors changed, and when malaria disappeared. And if we study these factors in Africa right now, we might be able to assess their importance, and guess their future.
Having such a theory, and specifying the relation between these variables and malaria prevalence or deaths, would give us guidance on where to invest our money: drugs or drainage, spraying biocides or improving education, buying temporary bednets or improving housing, hydroelectric projects like the Rennaissance dam in Ethiopia or more bednets.
Before I go too far, I would solicit your comments on the important socioeconomic variables, and the links between them and malaria.
Let's give it a try.