IMO, overseeing 0 people is great. I'm not likely to take any position where I have to oversee more or less than that; although I'm willing to compromise and oversee one person where they're actually independent and I don't have to do much overseeing.
Overseeing 0 people is great if your role is an individual contributor. If your role is a manager and there is no one for you to manage, it would seem that your role is redundant.
