I noticed that this block property you're talking about is already applied to grass in the game. There are many other blocks that should have this property too. Namely, small stones, wild cotton/flowers, and trash decor, which are also tedious to remove when building a base.
Another block-placey feature that could use some attention is the one that makes certain props snap to the top of non-full blocks. Potted plants, backpacks, "pile"-type loot, and others already do this, which allows them to be placed on things like slanted roofs and half-blocks without them floating. It's a great feature for decorating, and when I come across it in POIs I start to forget I'm playing a voxel game. Frankly, a lot more props need this property. Most props should have this property, since there's never really a situation where a prop would look better suspended above the ground. The most frequent situation in which the lack of this property on some objects stands out seems to be on the first few nights of a world when you don't have a designated base yet and decide to camp on top of a building. Since many of the safe POI roofs are made of half blocks, you can end up having to look at a floating bedroll, campfire, and chest for the whole night. And at this point I'm probably being nitpicky, but it would be cool if props also did this on terrain blocks (sitting neatly on top of the visual terrain height). Block shapes would still mush the terrain into its "true" form (so you would still be able to flatten an area using wood frames) but a chest placed on the road/grass wouldn't sink into it.