no real point, its just been heavily hinted at by kishi that sasuke and naruto are going to be the pinnacle of their respective traits, dojutsu and buku amounts of chakra, so when people say hes getting rinnegan theyre just adhering the the trend kishi has set forth , even though the implication is that sasuke would have to get beaten to within an inch of his life to gain that ability
on a personal note , i think in the end it will be sasuke rinnegan vs naruto mixing kyuubi chakra with senjutsu chakra