Family Name: TearjuLunatique

Region (NA/EU): NA

Every treasure item should be stored in family inventory. Imagine getting currently rarest treasure item - Ebenruth Nol and now needed to swap it between ships everytime you want to switch between barter and sea monster hunting.

Once per familiy items like our Krogdalo's Sanctuary should be able to be stored in the family inventory as it is unique and we can't get copies of it for tagged characters or other situations

Personally i don't see why it is an item at all. It should just automatically work on all characters in the family just like a fairy. to swap inside the stable - i.e. you have more than 1 of the same kind of mythical horse and just have to swap it for some reason. you could do it at the normal stable keeper using the transfer mount function just like sending to another stable in the world. Most folks would probably only have 1 of each which would then be inside the KS. as you can only use 1 character at a time the horse goes back into the KS when you log out. 

Just got this last night and realized quick how user-unfriendly it is.  

Went from having horses on 3 characters to now having to add extra tasks on these 3 characters every time I log on to them..  First, have to maid the Krogdalo Sanctuary (via char select screen) and then I have to remember to check the horse in before swapping to another toon.

There's no reason why this shouldn't go in family inventory, or as someone mentioned above, just have it work on any character.  We also need to be able to check in horses that another character might have left out.  It's pretty annoying.

You don't even need to use the char select screen!
You can use the item search function (Ctrl+F), type "sanct", and right click the item to transfer to current char.

or that ~

still, it's just an extra step, or chore, that you have to do every time you swap characters

I think the problem with allowing the item in family inventory is, making it unable to use/move the item if a different char has a horse checked out.