Next-to-requiring perfect guards to kill Ganon isn't fair to those who can't do them reliably. There should have been another method of getting his "shield" down like there was for the fire boss or the thunder boss. Perfect guarding the laser is not an easy thing by a long shot. Given that the ONLY other way to do it (that I've seen online, and did once myself) is Urbosa's Fury, that's just nuts. Perfect parry is something that
@Dirona didn't even know EXISTED (she forgot that she did the training shrine in Kakariko because it was so long ago) and given the number of tough mobs with two-handers that it seems "iffy" to use it with (Lynels) it doesn't seem reasonable to me to require it against the end boss when Perfect Dodge was your "go-to" against mobs like that the whole rest of the game. They should have allowed a perfect dodge/flurry strike when dodging something else to have a brief "shields down" moment or SOMETHING else (like ancient arrow to the eye) to bring the shield down. Or maybe when he throws the spear at you, you can pick it up and throw it back to penetrate the shield! That would have been good. Bad boss design there IMO making it so non-obvious what to do.
Beast Ganon was fine, though non-challenging IMO. My biggest enemy in that sequence was the trees. I think they're there only to screw up your horse.
And for the ending yourself when you've won... WTH? After a massively expansive game, you get an ending that is just kinda... you're done? That's IT??? I know most of the game should be about the
game not the ending, however, MORE!!! It's just you and Zelda on a cliff saying about how you have to rebuild now. And... nothing. They could EASILY have had the game continue after that point, rather than "warping" you back to the moment before killing Ganon, and leave Zelda in the game as a consultant, source of additional "rebuilding" quests, etc. But they didn't do that, and thus the ending feels kinda "OK... all that for not a lot?" Even a summary of what's happening (based on quest flags) to the various parts of Hyrule would be great. Celebrations in Tarry Town, Kakariko, or wherever, ala A Link to the Past, and/or OOT.
Taking the idea further of Zelda as a consultant, a great path to go down would have been "cleansing" the land. One tower region at a time, have quests to
permanently disable the Blood Moon for that area. So once you've cleared the monsters, they're gone. And/or rebuilding quests (especially for the castle & surrounding areas) would have worked. Making it clear that a hero is still useful after Ganon is dead.
I still enjoyed (and am still enjoying) the game, but still, not nearly as strong an ending and/or postlude as the game deserves.