This simply makes the chairs in Sky Haven look as ancient as the Temple itself.
I just whipped this up for my own mod list, thought I'd share.
(before anyone comments, yes I know there is more furniture in the Temple that would also benefit from this mod, but that's all pretty weathered already or it's lit by an orange fire light. These chairs are the only ones that bug me.

If this messes with any quests, NPC behavior, etc, PLEASE let me know

This includes an edit from the USSEP but it's not a requirement.
SMIM is required for this mod as it includes the normal map for the new chairs.