For those of us, who are still getting to grips with the rules, it would be a good option to be able to temporarily save an character whilst creating it, thus enabling the applicant to do some research, either into the rules or into the setting. It takes me at least a day to go from a nugget of an idea to a fully fledged character and I noticed that once I applied for a story, I wasn't able to edit my character.
Maybe a function that allows a player to re-edit a character in play (after approval from the storyteller) would also be handy.