I keep hearing about the importance of ancestry work in Magick, about how it is the gate into Magick itself.
Come on, people, Crowley didn't do any ancestry work, same goes for Papus, Levi, Spare. Yet all of them were pretty skilled and powerful magi.
If your paradigm counts with ancestors then yes, they are important in your practice, for other paradigms, not so much. The thing is we all are different individuals with different practices, there is no key concept that would be same for all of us, some venerate ancestors, some worship deities, some conjure demons, some draw stuff on a piece of paper, and everyone can obtain the power.