I mean VFR - the issue is whether a particular aircraft needs to maintain Instrument
Flight Rules or not. If it does, whether it's visual or not, it needs minimum separation - if it does not, then it it can fly VFR - and that again is irrelevant to whether it can see the other traffic or not.
Incidentally:-
Come on Beags, you should know better - I cannot ask that. Choice of IFR or VFR is pilots decision only and if he wants to stay IFR there's nothing I can do about it. Even suggesting it would get me a one way interview with the boss!
That was me not Beagle, but I can't quite see the point. Is it not reasonable to ask an aircraft that is in VMC to operate VFR if that is convenient to everybody else. They can, of-course, say no?
G