Mushroom Caves: New Cave Biome

I know a few people have made Mushroom Cave suggestions, but I just wanna say my ideas and opinions about it. The biome will spawn under dark oak forests and mooshroom islands, it can be marked with a special kind of mushroom, similar to the lush caves. The mushroom could maybe be a dark red / maroon colour. This biome can also include the mooshroom cow.

There will be 3 different types of mushrooms; Small Mushrooms (like saplings), Medium Sized Mushroom (similar to the azalea bushes) and Big Mushrooms. Depending on the cave size, the big mushrooms can have different sizes or if the cave is too small, they might not spawn.  The types of mushrooms can be; (Credit to another suggestion) A glowing mushroom, used to light up the cave but maybe it can only be in an azalea type block. Purple, Blue, Maroon, (the existing) red and brown mushrooms. The mushroom generation can also be changed to be more of a semi-circle. Each colour can have a different type of shape, e.g the blue mushrooms can be spiky and the brown ones flat (like they are now). T

he floor of this biome can have a fungi like block (maybe a vibrant purple), similar to mycelium and nyelium. It can either be 6 sized like the moss block or like nyelium but with stone. 

Some minor details can be a grass-like block for detail to the floor and maybe some fungi growths or leaves (hanging) on the ceiling of the cave.