Victoria will make an excellent queen. She's studied abroad, travelled all over, trained with her father, survived a bout with anorexia, and seems to be very centered.
I think that early on she had to deal with the strong personality of her mother and forge her own independent road. This may be a partial source for the anorexia, as Sylvia is very concerned about appearance. But Sylvia is also an incredibly bright woman who speaks many languages and is interested in many issues, and she has passed this on to her daughter as well.
The main concern of the people in Sweden right now with regard to her is whether she intends to marry her boyfriend, a commoner. She has made it very clear that her royal duties come before love, however.