There seems to be a misunderstanding.
The assets are obviously completely fine and high quality and well made 
You can see very similar assets in Epic’s own demos or in Quixel’s work.
If those people don’t know how to make the correct assets, who does ;)?
Also, the aligning works perfectly fine with our assets. (and any other asset) of any size.
The only issue is that the alignment no longer works, if the density is decreased.