Yes, some annotation for conversation would be nice. I think it would be nice also to see an attractive example application (separated from others) where Orchestra is used in conjunction with
-Facelets -Spring 2.5, and where every bean is configured with annotations, conversation and session scoped bean with proxy, and also: -minimal web.xml configuration removing all the filters about JSP, -minimal applicationContext.xml configuration: is possible to not require all that scope configuration?, -minimal faces-config: is it possible to move some of the <application> artifacts in the orchestra JAR?

