(How Well) Does Modeling Work?
The EA-MDE project, led by John Whittle, aims to empirically assess the efficacy of model-driven software engineering. To be useful, it needs the participation of as many companies as possible. The easiest way to help is to fill in this short survey, but they are also looking for companies/practitioners that would accept an interview to discuss more in detail these success/failure factors. You can follow their project blog to track their progress.