That's such a geat idea
I mean, it's so blatantly obvious that sakura = rin. Kishi even drew a official artwork on team minato and team kakashi. 
Sorry if the pic is too big. Can anybody tell me how to put in spoiler tags?
That is a good picture, though we see that Naruto and Kakashi are standing opposites even though Sasuke and Kakashi tend to be the parallels of being the opposite fate. Generally people tend to attribute the opposite fates of team minato for that of team 7, Obito being everything Naruto could have been if he gave into his hate eariler, Kakashi being what Sasuke should become a better person who learned the importance of others and seeing others like family, and Rin having learned too late about her feelings for Obito and Kakashi being the one who felt bad how he almost abandoned her, for Sakura its learning her feelings for Naruto and obviously living. What makes Sakura-Rin a bit harder to pin is mainly the events and how they turned out, its not as simple as say Naruto to Obito and Sasuke to Kakashi but the aspect of the team setup, Rin being a medical ninja, and having feelings for one who does not return them but another does on the same team, yeah thats the parallel right there. Sakura's main change is to realize this unlike Rin who it occurred too late.
However there are also similarities in the setup for Naruto-Kakashi and Sasuke-Obito. Generally by the mantle they chose to follow, the path they decided to run down. Kakashi is in a very similar situation like Naruto, a former friend doing so much evil and caused a lot of chaos. As the same for Sasuke and Obito who followed a path of chaos and revenge, Sasuke first on his brother then on the village. Obito first for Rin then on the world. As we see with the current situation though, Naruto is resolved to stop Obito while Sasuke has a different idea in mind unlike Obito which involves keeping the world alive (as no world means no plans at all) but he wants to change the system, by force if necessary.
But in line of these, as it stands:
In terms of parallels, Naruto=Obito and Sasuke=Kakashi mainly because the fates of these guys followed different paths, whoever the next generation one was, the next (team 7) followed the opposite. Also helps to mention time and time again, Kakashi saw young Obito in Naruto, saw his old self in Sasuke, and even Obito saw Naruto as his opposite too.