This is one area I'll concede is potentially "downgraded" versus older footage (eg: Sword of Destiny trailer) and that's overall foliage quality. I still think it looks gorgeous and dense, and that trailer wasn't without pop-in and such, but there are still/scenes which to me show a higher quality foliage (sharper assets, higher resolution transparency, less quality reduction at distance) especially on grass. I do wonder if it was toned back for performance reasons, or if supersampling + sharpening in the older footage gave an illusion of detail.
Regardless, there's no open world game on the market pushing foliage like Wild Hunt, so it's hard to complain. GTAV is the only contender for superior foliage tech, but that's Rockstar, and it comes at an insane performance cost. Downgrade or no downgrade, I do with CDPR and their engine would allow for more flexibility in tweaks, such as foliage LOD distance, for those who do want to try cranking up the quality to insane degrees. Shame it's baked into the assets.