The Darth Plagueis thing in Revenge of the Sith probably leaves the door open.
But i know people like VINH will say that is not canon,lol.
The Spirit Transference idea comes up in the third Bane novel. So i don't think it has been abandoned.
Also there is no reason the Sparti cloning cylinders cannot be retconned into the continuity. Since cloning exists in the prequels.
Cloned jedi versus a Mandalorian army and sith warriors probably was the original idea anyway, not boba fetts dad who never existed before episode II.
Also a fully suited vader and adult Boba fett helping him track down and exterminate the jedi.
Luke and Leias mother goes into hiding and other stuff like that.
If Their full genetic code was used The clone would have the same abilities as the original source with training, because they would have the same midichlorian cells replicated in them.
It would be beyond the scope of this thread to talk about whether or not a clone has a soul. Or how can a jedi clone not be useless once their templates spirit joins the force. Unless they also clone memories and experiences.