You do realise those lines don't preclude pilots calling on another frequency? While we have low level sectors providing a FIS, including traffic to IFR and a SIS to VFR who want it we will have fixed frequency boundaries to define areas of responsibility for those sectors.
IFR and VFR aircraft mix so it makes sense to have them on common frequencies. That's just plain CDF, not ideology. Having the boundaries indicated assists that.
You're the one wanting to have a half-arsed mixed system by introducing changes piecemeal as a way of getting the end changes you want in. Talk about untried systems.
Last edited by le Pingouin; 19th Mar 2017 at 08:10.
Reason: typo