It has a ScriptingLanguage with a simple-as-you-can-get parenthesis-based syntax and innovative constructs for dataflow expressions and drawing editor control.
Augment with DougSchmidt's ACE toolkit, and it's a DistributedComponentEnvironment? for developing hybrid viewer/server applications.
Augment with MarkLinton's Fresco (see FrescoFramework) toolkit (future possibility), and it's a cross-platform GUI toolkit with unique vector-graphic capability.
It might be a good starting point for the infinite canvas of ReinventingComics. Or a graphics-oriented white-board conferencing system. Or a ... (add your idea here).