Let's be real, MEM. Clinton might not have been appointed to fill Moynihan's vacancy but she was selected by the state party bosses to run on her name and not her (then largely non-existent) experience.

Caroline Kennedy is at least as "qualified" as Hillary was when she ran.

On the other hand, it might be a moot point. The way that Bill's donor list is shaking out Hillary might not get confirmed as Secretary of State due to all the potential conflicts of interest. If so, there won't be a vacancy for Kennedy to fill.