It is easy to say that "VFR works" for someone who has meager flight experience, or never tried to spot traffic into a sunrise or sunset, or against the background metropolis night lights of KLGA, KDCA, KLAX, KORD, EGLL, or even RJTT, or that never has had to comfort the families of dead friends or passengers in the fighter, airline, or glider community from a midair, or had to investigate one of these sad events.
How is your grand plan going to affect a rancher buzzing around his fields at 300 AGL looking for cattle? For someone who wants to go hit the aerobatic box? Pipeline patrol aircraft? Police helos on patrol? Some operations are inherently VFR, its not going away, its not going to be altered significantly. There's not a need, nor is there a will to make fundamental changes.
GA isn't all that healthy as is. You add extensive avionics requirements beyond 2020s requirement as a segment of the aircraft are going to be parked for good.