CDPR forgot tons of things of the previous games, which would have made TW3 alot better, not only from a nostalgic standpoint seen, but also from a content as like gameplay and especialyl fun standport seen...
Lots of possible Gwent Cards missing
Lots of monsters missing
Lots of potions missing
All of Wyzima missing, just that stupid castle only, when the whole region of it/town ect. should be explorable that we playing in TW1, to see, hows life going on there now in TW3 returning to thre place, beign able to see consequnces of your decisions and actions made in TW1 (or for console players emulated consequences)
Dumbed down Alchemy and Potion System
Extremely reduced Sex Options
traps and throwign daggers missing
lots of character entries in the glossary missing
lots of NPCs from the previous games missing or at least some kind of plausible explanations/quests missing, what has happened with the characters or give you a chance to see them even again
Lots of main npcs missing (Iorveth, Saskia ect., but thats most likely somethign for the xpansions)
TW3 has lots of unused potential that should be take to give the game back some of the prequel's glory which would make TW3 a much better and far more entertaining game