That would probably be the easiest way for them to implement a grave as well. Just put an urn in the Tower somewhere, you press x or square and it says random lines about him. An urn is already in the game. So they'd just have to reskin it and they'd be good to go!
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Maybe a new addition to the tower, a mausoleum perhaps? You can pay respect to the dead by donating motes of light or strange coins