During a consultancy in Amsterdam two major requirements for the GMFTools arose. Up to today, GMFTools was not able to tell GMF to generate RCP code. Another issue was the lack of automation of regenerating a set of diagrams at once. Both features are part of GMFTools (SVN) as of today:

The generate RCP checkbox

RCP plugin.xml

RCP example application

Add to execution set command

GMF configuration set command