I'd love to learn more about the giants. My idea is this:
Temples placed around Ur. Maybe allow 4 per region, each representing a single giant. The temples would, in the style of the Rook Museum, tell the story of each giant and describe what they represent. Temples would have decorations that not only show what the giants look like, but describe their primary skill affiliations and have items represented that pertain to them. For Zille, as one example, have one example of each rock that could be mined in addition to museum cases displaying at least one of every item she is associated with (ore, gems, mining pick, etc); the items in cases would not be accessible to players. There could be multiple temples of the same giant in different regions.
Then, have only 1 in the entire world for each giant, cathedrals: These would be grander versions of the temples. In addition to what would be found in temples, the cathedrals would also describe and represent the secondary affiliations of the giants. So if Mab is a secondary giant for the Potionmaking skill, there would be a secondary affiliation wing with Potionmaking and other skills represented as well as museum cases for those items.
Trees and animals in the cathedrals and museums would be unkillable/unstealable, as they are sacred to those giants.
An "inner sanctum" to each cathedral could allow "direct communion" with the giant, giving some kind of reward or buff. For example, "Humbaba's blessing" might last 5 minutes and give a bonus to harvesting from animals. This could be limited to one communion per game day, so people would have to choose carefully-or perhaps access would require a donation of a certain item or items.
Cathedrals would be located in regions that have stronger associations with the giant in question; for example, having Zille's cathedral located in Callopee, Pollokoo, or Ilmenskie Depths/Caverns.
There would be donation containers in each--donating in a temple would give you double rewards IF you donated items the giant has a primary association with. Donating in a cathedral would give triple on primary items, double on secondary ones.