Refactor the Base::init() method

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The init method directly instantiates all other objects.
Ideally we should just add a hook and load each object only when needed.
Not a big issue because each object then adds the hooks it needs internally, so the only real overhead added, is the files getting loaded when not absolutely necessary.
We should refactor that method, looking at what hooks each sub-class calls, and loading the classes only when needed (probably on init)
An optimization worth doing 👍