for me there has to be two things :
first of all cornerclubs , the cornerclub is the very being that emulates morrowind culture , in morrowind they were a part of life , and if they did not make a return i will be deeply sorrowful ( not to mention having a rage

second - thirsk mead hall! even back then the meadhall felt so rustic , so nordic ! in skyrim where the nord culture has gone to town can you imagine what the updated version of the mead hall will be like ? drunk nords.....barrels of mead .....bard . heaven .
but i bet it wont be there , we will probably here some story like " in 4E 200 a mysterious magical something did something to the meadhall and it will henceforth never be mentioned again - screw you !
with love
devs "

well they are the too things i simply cannot live without , thoughts?