Data Defined Blocks

I wasn't sure if i should put this in Modding or Parity, so I apologize if this is out of place, but Bedrock Edition has the ability to add in Custom Blocks through addon packs. I don't know how addon packs work internally as i've never made anything for Bedrock Edition, but believe that the two systems should roughly match eachother in terms of what they can do. Defining custom blocks could be as simple as writing a json that connects to a custom block model, and then defining other qualities based on existing block settings within the game's code (sound, map color, blast resistance, time to mine, tools needed, etc). This would mean that datapack creators could add custom blocks without being limited to existing, jank-prone unnoficial methods (though they likely would be limited to vanilla block behaviors). It would also make the development process much easier for modders, and even the developers of minecraft itself, allowing developers to spend more time on the functionality of the blocks they code in than registering them in the first place. Many other things in game are data driven now (recipes, biomes, loot tables) so blocks seem like a logical next step.