I'm sure glad you ended that with "In my opinion, because eh, I pretty much disagree in every single regard.
They made more use of 3D perspectives than 4th Gen. They managed to make the overworld sprites have even more detail than before, with several characters having nice little animations that honestly helped give them a personality and depth. Not to go crazy, though - Alder's hair ruffling doesn't scream I AM A CHAMPION or anything, haha.
To be fair, the nature looked real-er than ever before, and we got a nice Seasonal system that, again, added some depth to the world. Of course, day/night restrictions are one thing, seasonal restrictions are another. Still, it was a nice touch that didn't hurt the gameplay.
The story was far from stupid. I'm sorry, opinions are opinions, but you're not very right about that, haha. The entire 5th Gen storyline is easily the best writing they've ever had. A nice amount of characters who you can actually give a damn about, whose role in the story matters. Look at the rivals; Cheren, knowledgeable, impatient, skilled, but needs to learn that there's more to battling than being the best. Bianca, even better. Sheltered, innocent, clumsy, and the first character ever who has to accept the fact that she'd never be the best, and that it's okay. XY pooped all over the multi-rival situation by giving you a huge group of people, BW/B2W2 got it right.
As for Team Plasma/N, their story was easily better and more thought-provoking than past teams, and Team Flare. Good Lord. I mean N befriended Pokémon in nearby routes to use in his battles against you, meaning he never had the same team twice. That's pretty creative.
"Remake of itself" - incorrect. B2W2 were the best. Not only did they have a direct sequel for the first time since GSC, they managed to do it within one generation, and form a brand new continuation of an already great storyline. B2W2 had great move tutors, the best regional dex ever, period, and the frickin World Tournament.
Admittedly, Gen V had its fair share of sucky Pokémon. But the fact that there were 157 brand new ones, that BW served as a reboot to the franchise, and let everyone really feel like it was a new series, is a pretty big deal.
Easily one of the best gens, mainly due to B2W2. Just my opinion though.