I wouldn't drop it, as i like it they way it is at the moment.
Personally found it funny, when people complain about stuff these asspull power ups, i mean come on stuff like these should be expected with a series like Naruto and the fact the Kishimoto himself takes inspiration from DragonBall/Z. As i'm very excited to the new changes with Naruto and Sasuke, in future chapters of the series.
Well, yes. I'd Agree with you on some parts in regards to the whole "Talk No Jutsu", But what you got to understand is that it's the whole point of Naruto, his very destiny to bring people together. if you do not like that Naruto talks to these villains hoping to get them out of whatever they are doing and to bring peace (With the extra punch up of course). Then you might as well drop the manga right now. As Naruto WILL succeed Hagoromo, and he WILL talk to them. But if you was saying that it's all talk and nothing really is progressing and the story starts to get stale. Then yes, I'd agree with you on that one.
Personally i think there was LOADS of character development in regards to Obito, Rin and Kakashi. As all we got was flashbacks after flashbacks about them. Sure we could of got a bit more history about Rin, but i do not think it's really necessary at this point.
Well, not really. Sage Mode and the Rinnegan are not being past around like pass the parcel party game. So that's just nonsense. As so far with the Rinnegan it's been Nagato, who was chosen by Madara to have his eyes transplanted into before his death, as Nagato himself is an Uzumaki and could use it to some extent. Obito, well he kind of took the one (or two i forgot) and was also able to use it because of the Senju DNA from the zetsu thing attached to him. Madara, well he DID awaken them and also had Senju DNA transplanted into him. Sage mode well i could show panels after panels to how hard it can be to achieve it. So it's also not really being passed around.
Obito losing to kakashi in 1v1 was also complete plot no jutsu. He lost to kakashi with same set of moves they used 10 years ago , and he suddenly is unable to use rinnegan and mokuton which he had.
Well, these kind of things happen all the time, with stories, so it's really to be expected.
So that's my two cents, i'd really suggest giving it a break or just dropping it if you are really not enjoying it anymore, for me. I'll be carrying on enjoying it myself as i've found it be really good lately. War has dragged on but yeah.