How old?
Will he age over time, or will his age be static? Will aging affect him?
Will I start at a specific age, or will I be able to choose? Will I be able to change his age through various actions?
These are the things I am most curious about. As a roleplayer I feel there are exciting elements of RP available for a character of any age.
In Fallout 3 we were given the opportunity to play an infant, a child, and a young man or woman. However, our involvement with playing an infant and a child were not very personal. These points in the game were essentially nothing more than tutorial stages. In addition the age of our character did not theoretically advance. Personally I would like the opportunity to have more control with the things my character does and is involved in while he is young, along with his age progression, and of course the different stages of his life.
I dislike that generally throughout recent TES related titles we have simply played carbon-copied advlts of a relative age, no visible effects of their current age, and a nameless origin. I believe that adding some aspect of control over your own character's age may change this, and make each character feel more unique.