Hi Yannis and Nick,

So after studying a few interesting possibilities
and excluding them, I am back to one of my 
first ideas which I did not mention on the phone
because it is best described in the summary 
image that I am attaching.  

The idea is that one can map the structure of the Fomalhaut
belt by monitoring a background star that will pass
behind it over the next 20 years.  

This is an experiment that has never been done
before outside our solar system, but let to major
advances in mapping the planetary rings before
in situ experiments were available.

The experiment is therefore risky.  It is innovative
because no one has tried it before.  It is easily
explained to the non-experts due to the simplicity
of the concept.