1. There seems to be some bugs during battles where collected items vanish from inventory when you die/respawn... and half the time the weapons you broke during the battle are gone too. It's like it PARTIALLY resets from the last save point. It's hard to explain properly, but its very jarring when you're fighting the 4th Lynel in the Lynel Colosseum thingy and you're missing MOST the items you collected from Lynels 1, 2, and 3, and SOME of the items you started the fight with (after respawn).
2. Almost all the BOTW stuff is gone. I know it had to go, but still. It would have been comforting for an occasional Guardian to come along and try to maim me.
3. Bugs when diving into a chasm. Sometimes when holding R to speed-dive into a chasm the game will lock-up once I breach into the chasm.
4. It's just not as compelling as BOTW.