Datapack generator in minecraft launcher (JAVA)

It can be perfect add a datapack creator in the launcher for minecraft Java, because it is a think created by the community, but it isn't created by Mojang, it can be fantastic create a datapaclk in the launcher, and save the datapack, with a custom picture or a block texture, like the furnace or the crafting table. When you created the datapack, you can play the game, create new world, and add your datapack easyer, in 10 seconds, only 2 click, and create the world for try your creation. 

The datapack creation can include: 

-Custom craftting

-Custom villager trades

-Custom advancements

-Custom biomes

-Custom world generation

-Custom dimentions

-Custom structures (To create structures, you can with a visual form, enter in a world folder, and see the saved structures with the structure block, and click on the structure, and add the structure, and for the noob players, the launcher can add a world, and in the world can be  a structure block in a plain world, with only grass, no more)

And more....

The fantastic and spectacular community of Minecraft created lot of datapack generator, and if the community can made this, Mojang can made it.

P.D: It is better for java, because in bedrock can be only for Windows players, and minecraft Java edition is better for datapacks