Hi, I've mostly lurked here and just read through your story hour over most of the last week and have to say you are an excellent DM with a great group of role-players. Such creative genius is rare
I have an idea as to what you could have happen... If you're looking for the classical approach you could have there be an evil greater evil behind Imbrindarla. Perphaps the next most fitting person rises to gain her portfolio, a likely candidate being Kellharin. Then he could be much much worse than Imbrindarla ever was, bringing about more problems than she ever did. You could even push it further, creating a story that Kellharin himself created the coup. Galanna is exiled from godship for striking down another diety and she needs Tao's help to uncover the truth and recover her portfolio and divine rank. Meanwhile, the ghouls whom were thought defeated are now stronger than ever. The Defenders must defend against the onslaught of ghouls and prove Kellharin's crime at the same time. It seems the Defenders already have a hatred for Kellharin, perphaps now they can hate him much more.

I have an idea as to what you could have happen... If you're looking for the classical approach you could have there be an evil greater evil behind Imbrindarla. Perphaps the next most fitting person rises to gain her portfolio, a likely candidate being Kellharin. Then he could be much much worse than Imbrindarla ever was, bringing about more problems than she ever did. You could even push it further, creating a story that Kellharin himself created the coup. Galanna is exiled from godship for striking down another diety and she needs Tao's help to uncover the truth and recover her portfolio and divine rank. Meanwhile, the ghouls whom were thought defeated are now stronger than ever. The Defenders must defend against the onslaught of ghouls and prove Kellharin's crime at the same time. It seems the Defenders already have a hatred for Kellharin, perphaps now they can hate him much more.