Bose
I take your point especially when one guy is flying something like a Cessna 150 IFR in VMC because he can do.
But increase the complexity and speed range of the aircraft and it becomes a safety factor to Fly IFR ! ie seperating the slow and faster stuff.
Aircraft which requires the captain to have his eyes inside more because the aircraft is more complex or where his view is restricted by engines will also be safer in an IFR invironment whether in IMC or VMC.
So maybe we should be categorising aircraft as VMC machines or IMC machines. A VMC machine which has IFR capability should not fly IFR in VMC while maybe an IMC machine should fly IFR in VMC if you get my gist.
Pace