The End of the World Breaks my heart every time 

Also I would love the option to craft cursed items - had a char idea revolving round that but was completely unworkable. And I'd like to be able to rename non-enchanted items...

I would like to be able to play musical instruments, or maybe a playlist for your house bards. I'd also like to choose the fabric or colour of my clothing.  Anything extra is gonna be fun tho.

I love the fur helmet. Granted it's not as good as the Oblivion one, but I still HAVE to wear it!

I have one character who is essentially me, a hoarder who has to complete EVERY task....then I have a couple of characters who have blinkers on and a very narrow path to follow. This means when I start the game I either do it all, or play to a specification... I find it really helps to have 3 or 4 backup characters, with radical motivations, to inspire me. Add in an ongoing character build or two and that's enough to flick between to stop me getting bored, and enough diversity to entertain.