CTAFs are being promulgated on discrete frequencies to reduce congestion (e.g. recently Innisfail / Tully / Dallachy onto 132.9), and while the 'call on all circuit legs' concept was ridiculous, that's been altered now in the relevant CAAP to an as required thing, which for most sensible people I'd suggest would be rolling and base calls if doing continuous circuits.
I don't think the problems are really that complex when it boils down to it, Captain Midnight.