What spells could temple defenses (p284, 288) be used for? A temple to Chalana Arroy, for example, I imagine would pretty much only use Harmony to prevent fighting. Babeester Gor gets Shield and Earth Shield, I suppose the wyter could cast that on defenders. Eiritha's wyter could summon Earth Elementals. Issaries, though? Lhankor Mhy? What spells do you think the temple wyter would muster in its defence?
I suppose a fallback for just about any deity would be to throw Heal Wound spells at the defenders.
Then there's associate cults that have shrines in a temple, so the wyter may have access to associate cult spells, but should that be only the spells that the associate grants to the main cult?