The FPV is much more cleverly designed and can be much more effectively used then what most people think. The designers of it have put a lot of thought and expertise in the functionality and it should be treated as such, not put down as an ineffective tool. More in-depth knowledge of the tool would be more beneficial to pilots, unfortunately that knowledge is not readily available as many "trainers" are not aware of its full capacity.
The tool is introduced on NG and future fleets and thus is here to stay, learn from it, look into its design more detailed and see what clever functionality it offers and when it is removed from view (when not able in providing accurate enough information to you) and then post back on the "useless", "never use it", tool called FPV