I just had an idea: would it be useful to automatically generate nodes that give direct access to the Iron, Kha, Armory, etc. APIs? You could use the XML build of the Haxe libraries and use that as the source for programmatically generated nodes that give full access to the APIs. This means that if there was something that couldn’t be done with the manually created nodes, then you could go straight to the API to do it.
The UI would probably need a nested tree view of some sort to allow you to effectively navigate through all of the nodes, and obviously you would still want to have the manually written nodes that are more intuitive to users. Maybe we could separate the two types as Simple and Advanced Nodes.
Anyway, just a thought. 