In a way, Nakayan's situation is similar to Tanamin's. Same agency, both geeks, both look good.
However, I think Nakayan has managed to get a good thing going for her. She got the seiyuu gig she always wanted and I'm sure she'll give it her all. If she were to graduate AKB48, I think she'll be able to stay in the seiyuu circuit with the occasional musical role on the side. She showed she is a true individual. I think she can upstage most of the other girls if she truly wanted to be a top idol, but I think she's ok with the current situation.
If this will indeed happen, it will probably mean I will lose sight of Nakayan in the end. This is sad, because I quite like her. On the other hand, I'll be happy because I know she'll be living her dream. Go kick some ass Nakayan!