Well, I decided to just go ahead & finish the game after collecting the memories, because honestly? I had better games to play, & this one was just wasting my time.
Man, Calamity Ganon is kind of symptomatic of this game as a whole: he's big & visually impressive, but evokes no emotional reaction & is bereft of any narrative interest. And ultimately, he's just boring & lame, which pretty much sums up my opinion of this game. It's one giant, bloated, colossal waste that has some good ideas (I.e. the Portal Test Chambers...err.."Shrines"), but ultimately I was more annoyed playing through it than entertained. And the dungeons, one of the main reasons I play Zelda, are all terrible IMO.
This game has no story, and what story there is in the memories, which are really just teasers for the DLC. I guess Nintendo learned a lot about being a modern AAA developer.
There were parts I liked of Breath of the Wild, but not enough to get over how empty & annoying an experience it was. It's pure quantity over quality. If we do get a Majora-esque sequel/spinoff, I hope it's smaller & more focused.