I didn't completely understand your post but from what I take you're mad that Tai and Sora didn't end up together, right?
Does it even matter? It's not like Digimon ever had a serious romantic subplot, they just decided to pair up Matt and Sora for the heck of it. And Digimon was a show done with many writers with different ideas, so not much on consistency. I even heard that Digimon 02 was done by a different group of people.
Really? Hm, that does explains it. I never saw digimon when it was at its prime, so I never really know how the effect of random paired happened. Lol, I save my undefeated pairing war victory. But seriously, that's true about the subplot not being romance and all.
Naruto getting the rinegan has very possible imo . It would allow Kishi to go ahead and decimate the alliance and kill anyone he needs or feels like it and then have Naruto bring everyone back after the war is over .
Well, that's Obito's job to bring back the dead. As for Rinnengan, well, we just have to wait and see. But won't that mean Naruto will accidentaly cause a repeat of Uchiha and Senju. If so, he better stay away from marriage or at least give birth to one child, no opposite child. I'm not even joking. Unless there's a requirement to make an Uchiha and Senju's babies. Then again, I don't think there's any parallel with RS and Naruto, minus being the next runner.