Daily Quests would be a good idea for players who are looking for something fun to do. With the current lack of high-end content for players who have completed all the game-assigned quests, it would be nice to add a daily quest for each giant. Obtainable from a Giant's shrine(?), these would be a random goal related to the Giant's specialty that would reward additional favor with the giant.
For example:
Zille could request a donation of X gemstones (number varies by type requested).
Humbaba could request seasoning X eggs to incubate and release into X region (or sacrificed)
Cosma could request meditating for X minutes in a specific street
Mab, the planting, harvesting and donation of X crops
Pot, the same with high-end food items
This would give players some short-term goals on a daily basis to keep them active and having fun.