Character, Innateness, Individuality

In 'Schopenhauer as Educator', Nietzsche praises his predecessor's concept of innate individual Character as a possible corrective to conformist behavior.  However, his enthusiasm seems misdirected.  For, it attributes to Schopenhauer's system something that it lacks--a principle of Intelligible Individuation.  With such a principle, the intelligible Individual can be contrasted with the empirical Individual, e. g. intrinsic self-hood with socially defined role-playing, with the former functioning as a corrective to the latter.  However, without such a principle, Schopenhauer's system has no concept of innate Individuality, in which case, the object of Nietzsche's praise is actually a concept of Character that he himself is introducing in the process.