⟨10Joshua Wood⟩ In conclusion
It shows distance to the target with angle relative to some unknown quantity providing no actual useful information that isn’t instantly gleamed from normal reference frame 
They do not use even close to the same plots irl mostly because they are missing 2 entire dimensions and their angles are sensibly routed to a known body 
The stock patches conics system gives more information “at a glance” and requires less menus to get such information 
This could be implemented visually into principia very easily and provide the best of both
No idea if the code works out that way but it would surprise me if it was as computationally taxing as the current target relative frame. “It’s not on any priority list” would be a fine response