3) Editor <img src="/ubbthreads/images/graemlins/ROFL.gif" alt="" />
Sounds good.
when stealing items and selling them back to their owner he could recognice them or something,
I liked when Morrowind did that.
having your own house/castle build as a questreward, plus the option to buy furniture fo it, and weapon/armour racks to display your items...
Ooooh. I'd like to be able to buy a house. About buying furniture, interesting -- Sounds very The Sims-ish.
6) Something like a weaponsmith/armourer/conjourer skill, or even a full working jobsystem

would be great
How about creating your own spells?
10) Npcs like in Baldurs Gate II, or a romance, the option to marry?
Romancing sounds good. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />