Okay, consider this a psaudo-bump, so this thread wont get buried in the 1000 shipping poll's.
I restarted watching the anime right after XY started, so I had only really heard of BW as this thig that nearly killed the saga, because of it's terrible league, and Ash having a massive downgrade as a trainer.
However, I wanted to see what all the fuzz was about, so I tried out watching it, so I could make my own opinion of this controversial saga.
While there were a few downgrades, like the battles not being quite as epic, I personally found the saga to be a true diamond in the rough, sporting great humor, an Ash, that while not being the pro DP set him up to be, had that wonderful childish spirit that made the OS Ash very entertaining, and some pretty good rival's in Trip and Stephan.
Now, as to be expeted of this series, The main female was to be shipped with Ash, but negai wasnt quite the huge fanbase that stuff like amour, poke, pearl, and Advance had made up, and was more along the lines of centest, and orange-shipping.
Im gonna be entirely honest, while watching the first episodes, I couldnt quite see it, but around BW 4, it finally hit how well they worked of each other, Iris by making sure Ash didnt get himself into too much trouble, and Ash by lighting up the mood. That's something I really like in romance, the ability to not only live with your partner's imperfections, to actually benefit from them as well.
Now while most people tend to hate Iris' downtalking Ash, to me it never came off as "OMG, what is this idiot doing now", and more "I really wish this guy could stop doing stuff like this", and it never came off as cruel or hateful, more caring and wishful of Ash actually starting to, well grow up.
This was just my 2 cent's on why I think negai is a greatly underrated ship, that doesnt deserve the ridicule it gets.