I never really got Naoto's appeal in the first place.
Repressed homosexual feelings.
Joke. Naoto's cool
Though Naoto's VA (when she tries to sound like a boy) is absolutely beautiful. I almost want to vote for her because of that.
Well, it's not that I don't like her because she looks like a boy. I like her and all, just less than the other girls.
And Naoto's a walking plot device.
She's a walking "if you've ever felt ugly in your own skin" device. I don't know why people brand her as nothing more then plot convenience.
She had real development; through her time with the group at Port Island, to her dungeon, and all the way into her S.Link.
The "plot device" angle has little merit, as it was the MC who figures out each of the important aspects of the case (the delivery truck, the fact that Namatame may not have done it, and that Adachi is the most likely candidate).