And those tables are basically all the metadata that the Framework needs to understand and apply enhancement at runtime.
So if you copy the controller and context node extended class from the old system to the new one, changing the namespace of course, and copy the Repository.xml, then you just need to fill those metadata tables and you should be good to go 
You might also need to change some of the code in the copied classes as some attributes by reference types in the old namespace and some methods use class name as string (e.g. CREATE_MODEL methods)