Not really. If Naruto was the Mazo then he would be a juubi jin. The juubi can make due with fractions because it is the original. Its like giving someone enough blood to survive. They may be weak at first but eventually they will create more and regain strength. Instead Naruto simply works as a meeting place of the bijuu. The bijuu chakra will never disappear, but seeing how Naruto is not the original body there is no guarantee that he can reproduce the other eight bijuu chakra.Not really limited, Naruto's body is the equivalent to the Gedo Mazo since all he needed was an incomplete amount of bijuu chakra to use their full abilities, i.e 50% Kurama vs 7 100% bijuu.
His RSM is Sage Mode with Rikudou chakra and Hagoromo's chakra is permanent so his RSM remains with him until the after life.