For me, off the top of my head:

Good:

• Bosses a huge step up as setpieces from BotW
• Weapon merging is cool

Bad:

• This game straight up retcons the origins of Rito (evolved from Zora pre-WW)
• Still uses cheesable physics-based puzzles (although so far nothing as offensive as some of the BotW puzzles)
• Disappearing zonai items
• Terrible economy of upgrades in general
• Temples are still weak compared to previous games

Ugly:

• Still breakable weapons and Master Sword especially
• Still horrendous storytelling style that allows you to adventure and unknowingly spoil yourself for not knowing the exact order things are supposed to play out, and proceeding in that fashion
• Still horrible armor system (need to change armor all the time, must wear a full set for the set bonus, cosmetics tied to armor) (after a certain point in the armor upgrades, just let us intrinsically have the associated abilities... not like they're usually that powerful and would be a gamechanger in terms of ability unlocks)
• Koroks