It's unclear if the tech will be able to utilize mods too, which would restrict its appeal to gamers who only use the vanilla game content. The Sims has a rich modding community built off the back of how people like to customize their characters and environments, so an automatic 'character creator' could be fun for one or two uses, but I see this being shelved by most of the dedicated player base.
After all, if you find character generation to be a bore then you're not likely to be the target audience for The Sims franchise.
AI character generation does sound petty neat, but I have my doubts on how much the feature will actually get used when it's implemented.