rather than having found authors who write regularly and don't end up expanding and shrinking their novels as if they were variable stars,

I don't think "rather than" is quite the right expression, because it's probably quite unusual to be monogamous with authors. Except perhaps for the partners of authors. But I digress.

I would, of course, buy books by other authors too even if you were to produce a new one every Christmas. And I am looking forward to your new one.