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A New Way to Detect Biome

Execute command became more powerful after 1.13, but there is something missing. It is the way that map maker to test what biome an entity is currently in. I think there are three ways to realize the feature.

1.Add a NEW NBT tag "Biome" for all entities, like the "Dimension" tag, so we can use the target selector to detect. Example @e[nbt={Biome:"minecraft:plains"}] 
2.Add a NEW subcommand under "execute if/unless..." Example /execute if in <dimentions/biomes> run.... 
3.Add a NEW target selector argument. Example @e[biome=desert]

Actually, the biome detection has been implemented in the function of advancement, but it can't work on the other entities.

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    Registered User commented
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    This would be very useful as it would allow for datapacks to affect things on a per-biome basis and would vastly increase the amounts of possibilities with datapacks.  I've been working on a datapack that spawns new structures in the world and detecting biomes is so extremely limited and inefficient as the best method I can use right now is a massive amount of commands to take a sampling of nearby tiles to get an "idea" of what biome it might be in.

    Whether it be through nbt or target selectors whichever method would be way better than anything we have for it right now as even the advancement hack is extremely limited due to how slowly it updates (only once per second) and the inability to use it with other entities.

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    Registered User commented
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    This would seriously help creators, surprised it isn’t already in the game honestly as it’s such a pivotal use