I have working on the target calling asistance so far and have not started on CC or automatic mode. I link to the GitHub repository of my project in case anyone is interested:
https://github.com/Dimmulux/TCCA. Note that this will contain many bugs as I have only done initial testing on it so far.
Acknowledgements go to LibStub, LibNamePlate and CallbackHandler which are currently used for setting the marker above the kill target's head.