Heart of the Forest

An idea for the nether update

Since the block on the floor of the nether look like netherack with stuff growing on it I was thinking that it could spread like grass, however netherack would also spread to it and spread much faster so that without anything stopping it netherack would take over.

This is where my concept comes into effect, I was thinking that every forest would have a core like a conduit underground at the center of it and that all blocks in a large radius (Larger depending on the tier of the core, forest will spawn with a random tier core) will stop the spread of netherack so that the nether grass can overtake that area (I was thinking Wart Grass for the red one and Stye Grass for the blue) also the core would allow the grass, mushrooms saplings to spawn and make the trees grow (it would only spawn these on the nether grass)

I was also thinking the core would be surrounded by obsidian so that breaking a core and ruining an ecosystem is something that you can do late game with a diamond pick, also the current red obsidian would be changed to Wart Obsidian and would emit a red glow and be around the Wart Forest core and Stye Obsidian would be around the Stye Forest core.