Two proposals regarding the size of HET community membership.    
  
First, in addition to protecting the private benefits of HET research, we should also
think about how to reduce the private costs.  Archival research is very expensive
(airfares, hotels etc); econometric research is so much cheaper (data easily available).
Reducing the cost of access to archives will twists the incentive structure towards HET
research.
  
Secondly, focusing on the dynamics of policy formation (the selling of economic ideas etc)
is an area that central bankers in Australia at least found interesting and novel (HET
with a contemporary focus).  Financial econmomics is screaming for more of an HET input.
   
Robert Leeson