It would be helpful if there was someplace to easily check your favor with all the giants at once instead of visiting shrines one at a time. Right now I tend to donate and spend favor randomly as I acquire things, run out of inventory space, or need help learning a skill. I would prefer to make donations and spending more strategic but this is difficult without knowing my favor status. Visiting 11 shrines before I do something is not really feasible.
I think the favor status list would be nice either as something you could access within the game or as a sub-page from your main profile page.