Sessions would be the best president in a long time. However he is probably too low key and serious to get elected.
I don't think that would hurt him with most voters, and they might be weary of bombastic politicians such as Obama and others. But the MSM would go back to his kindergarten years trying to find something they could twist as being racist.
Mainly a question if he would have any interest at all. And it would be best if he stayed quiet about it until an announcement was necessary.