Children would be interesting indeed.
That reminds me of Rydia in FF2. Even as a child she was a skilled summoner and could use many types of dark magic. A sorcerers skill doesn\'t depend on his/her knowledge, it is a gift and I see no reason why a child couldn\'t be able to use it. Perhaps not in a mature way, but still.
Link is another example, his skills with the sword and the bow matches an adult. Besides this is a medival-style game and children grew up a lot faster back then.
I would find it interesting to RP through the darker sides of childhood, like if my family/clan is brutally murdered and I am the only survivor (or if I\'m the murderer who kills my own family/clan), or a child who\'s got powers he/she cannot control or whatever you can imagine.
Of course, since you\'re a child you have your limitations, like most of your stats is low and you cannot buy any beer at Kada\'s

but you should also have some advances, like high charisma as Djaggernaut said. Some monsters wont attack you (unless you\'re attacking them first of course) and if they do, the chance is pretty high that they KO and capture you instead of killing you.
I\'m definitly for an aging-system, perhaps you could choose if you want to grow older or stay immortal, but that\'s up to the devs.