Hi Alexandre,
That looks good. I ran into some trouble when trying this with multiple packages. The VW5PackageExporter is very specialized for Seaside. If it notices classes starting with WA or with a superclass starting with WA it adds Seaside to to the imports, and uses a hack on Behavior to add Seaside.
visualworksName ^ (#('WA' 'SU' 'CT') includes: (self name copyFrom: 1 to: 2)) ifTrue: ['Seaside.', self name] ifFalse: [self name]
I was able to work around that.
Stephan