I don't like the current texture for mossy cobble, and I believe that many others don't like it either, I think it needs to be more subtle. Like BdoubleO100 had said in one of his videos, he'd like for it to be more like mossy stone brick's moss. As of now mossy cobble looks a little to exotic to be a fancy building block.
I like it the way it is, but it still has the shape of the old cobblestone texture. If anything, they should update it to match the current cobblestone's shape.
New texture
Old texture and mossy cobble. See the resemblance?
Wait for time
In the break of new dawn
We will never meet
New texture
Old texture and mossy cobble. See the resemblance?