Hi,
it is actually possible to do but requires a lot of work.
by using reflection you can introspect a given class and then choose which property or method to create an action for, and trickle down all major options for it, for example with a property, do you want to set it or get it, etc etc.
so yes it is possible, One old depreccaated asset had one of its developer that madde such a tool, but unfoortuntly they did not want to share that tool, it was basically parsing their assets and create setters and getters custom actions for all their properties.
Bye,
Jean