The Red Dome Templars are featured in Morrowind's Pre-Release screenshots. An armor set for them would help them stand out from Knight Templars of the Imperial Legion.
ESP contains combinations of assets that the Reach could badly benefit from merged versions of, particularly Karthwasten. A lot of buildings still use combos of individual elements that send the ref count through the roof.
There's plenty of CyrRga containers used across Cyrodiil which - while redguard in style - contain contents related more to Cyrodiil. Example that caught my mind was T_CyrRga_Furn_Ba1FoodGC which is explicitly using local Cyrodiilic food (and also makes for a bit frustrating part of Mykoi interior where GC food is used despite being supplied by Rihad).
Redguard frigate, meant to be the bigger redguard ship seen in ports such as Rihad. Concept art author is uncertain, with possibility of them being Lutemoth.