Um, I want it implemented so you can fix beautiful landmarks even after they've been destroyed (Plaza Brindisi Dorom, Fort Frostmoth, Kvatch, Bruma Guild of Mages, The Imperial Temple Square...).

AI. Smart NPCS are capable of making an entire game work. The rest I want, but AI is a must.

Piecemental armour ...

A Large land mass to explore with a variety of atmospheres, cities, etc.