I just finished ToTK and played most of BoTW around when it released. I really didn't care for either of them, favoring ToTK more than BoTW. I'm much more a fan of Minish Cap, Link to the Past/Link Between Worlds, Wind Waker, Twilight Princess, Story of Seasons, Phantom Hourglass, & Link's Awakening. I don't think the massive open world did them any favors. They need to keep it smaller and more curated like Wind Waker and Twilight Princess. I agree with all your criticisms.
For both games - I hate the weapon durability nonsense. In ToTK: I did not like how restrictive the building system is. I'm glad I turned on cheats at some point because the game was massively frustrating for me between the restrictions of the build system, the crafting, the stupid amount of gathering of materials they expected for upgrading your gear, the stamina system, etc. I have very little patience for grinding. I liked the creativity that you could have with the build system but that they tied it to your limited amount of inventory resources I felt was very silly. It hampered my desire to mess around with the build system because of how it was so easy to mess up and waste items/zonai devices, before I turned cheats on. It wasn't friendly towards making mistakes and experimenting. I can't believe there isn't a free build area and that you can only have, what, 8 favorite slots? They have a HUMONGOUS world but only 8 favorite slots for builds. Just lol. I did really like most of the abilities and the fusion system with weapons/shields, that was pretty fun to mess around with. The dungeons in both games fell really flat for me. I laughed out loud at the boss fight for the spirit shrine in particular because of how simple it was and easy to beat. I could not get myself invested in the plot, maybe I'm just too old now. The voice acting left much to be desired. The depths was a really neat idea but suffered from the overall game issues mentioned above.
You might like ToTK a bit more than BoTW like I did, but I think from what you said, you'll feel pretty let down overall. If they want to continue down this path, I hope they make some major improvements to the building system and encourage freely building. I want to see them discard with the weapon durability silliness entirely. The amount of grinding needs to go away too, I do not ever want grinding in Zelda of all places. They nePost too long. Click here to view the full text.