> Would that be doable with a custom plugin?
No, there is no interface provided to plugins to do this, and the runtime doesn't support it. The SDK doesn't have the capability to fundamentally change the way the runtime works, it merely communicates.
Besides, if you could, how would you add events to the new object type? It couldn't possibly appear in the event sheet editor.
Yeah It would be a pain, then you'd probably have to implement a target object, and that pretty much makes the whole idea pointless.
Perhaps just a generic sprite importer/ exporter for layouts?