the ship was a homosexual one so it and to be handled with subtlety, I understand why you think the main ending ship was not htat developed but this ended falling in the nature of the limitations of how a same sex relationship could be portrayed in a media like that.
And I don't agree with you about Korra's character, you can easily see she changed from the brash young girl who first arrived in republic city, now not only she is more in touch with her spiritual side but she was calm enough to reach out to kuvira in season 4 when korra from season 1 would have none of that
PS: If you want to reply to my comment take it for the korra section since this is the Naruto thread 
An open ending would probably make the fandom calm down over a time, though in the end, the ending was destined to have a sh*tty aspect to it because everything was too rushed I mean c'mon, 5 chaptersto end the story when the NarxSas battle isnt even over yet? smh Kishimoto
I just put in this thread, is that okay?
Well see I didn't watch Part 4 because I got so fed up with Part 3. Korra was still abrasive to me. I don't know, I just felt that she had way too many mood swings and focused more on her angst than anything else. That's how I viewed her. I didn't like her in Season 1, and I still didn't like her in Season 3. And I absolutely hated the entire premise of the "Red Lotus". What even happened to them? Cause I know there was more than just the ones in Season 3, right? The alluded to that.
But as for the pairings, they were terrible regardless. But I do see your point in being subtle. But it still should have gotten more screen time at least. If Bryke said that he's been a shipper since season 2 then he should have added more in, well, Season 2. I remember him saying that there wasn't going to be any romance either in Season 3. Well he should have made Season 3 more about Korra and Asami's dynamic then. That would have been way more enjoyable than the Red Lotus.
And I disliked Asami and Mako as well. I felt like Asami was only there because of her dad problems and to be pairing fodder. And Mako's character was just all around horrible. Especially in Season 3. He just came off as such a jerk to me.