You might have done l luck in a book about test flying and how the available cues in a particular environment are determined. As a starter for 10, you might search for ADS-33 which is the US Army design standard for helicopters.
In the section about usable cue environments, it discusses whether you have sufficient external cues to maneuver the aircraft increasingly aggressively (and it also describes the appropriate level of automation needed if you don't have the right cues). Whilst this doesn't specifically list that you need a two o'clock daisy it does give you a method for detmining if the environment you do have is enough.
Visual cue rating
So you go and fly in the environment you are interested in (say daytime in good light in the IGE hover) and you try various manoeuvres to see how good the cues are to maintain attitude and move logitudinally and laterally. Then you (and 2 other pilots) score it.
Then you take the scores and plot on the next graph.
UCE
If your UCE is low then you have great cues and you should need minimal AFCS support (R22) but if your cues are poor (dust cloud, NVIS, night) your UCE will be high and you'll need much higher levels of AFCS support to achieve what you want (eg hover hold or groundspeed hold).
There's a lot more in ADS33 and its accompanying manual. Take a look