and ok, for playability, there's people SS it, even HR. i'm not a pro player myself, i can get a B or A if i'm lucky, so i don't know why it's unplayable.
If you are going to go by that logic, then ninja spinners/burai sliders should also be rankable, because some people can do them. IIRC combo colors that blends with the BG are unrankable.
The reason blending colors is unplayable for me is because i can hardly see the notes/approach circles when they appear, making it quite difficult to know when/where to hit which makes the maps playability pretty bad.
You speak of how people are lazy mappers, well, it's funny to see how mappers map their maps, and then don't even play their own maps to realise how bad the gameflow/playability of the map is, but i don't blame them, most people who map insane diffs can't really play their own maps so there isn't much they can do since they won't really listen to modders either.
I've had this discussion with you before so you know what i feel about most of the wowaka maps.
That being said, this map isn't that hard to read, all i had to do was remove the hitburst.