Quick review for W3 after 5 hours I played:
So far story wise we have your typical RPG bullshit. Kill rats in the cellar, help some random woman here and there.
If you must buy W3 i recommend buying it on ps4. K+m is mediocre at best, and that is after you remap the controls. Jumping animations are terrible, other animations are okay.
Graphics after downgrade are really 2012, but the biggest crime is bad visibility because of the shading and colour scheme. It's hard to find anything or enjoy the view when everything is this red, orange shiny clusterfuck.
Open world? Well, if by open world you mean big distances between objectives filled with peasants working the fields, herbs you dont care about or wild dogs not worth any exp. I didnt like SKyrim, but they did open world correct. Yes, Witcher 3 open world seems real. But real world is boring, I want world to be filled with content, not fucking herbs.
Dialogues are great and are played well with few exceptions (Yennefer in polish, ugh, shes like 9/10 until she opens her mouth, then its 2/10. Her english voice is 1000x better.) In english the writing is also good, but english lacks this atmospheric tone that polish mixed with old and redneck polish has. But you should enjoy it.
So, overall I DO enjoy the game, but only because im still giving it a chance. So far its 5, maybe 6/10, story may add some points in the future. My biggest complains is controls and empty open world. Graphics are issue during the day. Irony, during the night you can see much better.