Sorry if this was mentioned in the thread already (I didn't bother to go through all those pages). Wouldn't the HD mod become a problem with changing AR? I mean like drastic changes could make you miss a note, and even just losing accuracy is annoying in itself. My point is, there isn't a reference for when to hit the hidden notes except for the first Approach Circle at the beginning of the map and trying to see how long the note takes to disappear.