Yep, my mistake, I meant 121.6.
Re letters to flight ops, agreed, but these things don't always seem to pass through. For starters I would have to convince our people to write to them. It is in the AIP but who carries those around! It's not a great operational issue, it's just annoying that's all. My original back ground is Aus ATC and I know full well how things operate there. QANTAS stands out in my/our experience as great "automatic frequency changes" when that's not how it's done in HK.
Capt Fathom, we crossed paths in cyber-space: If the clearance is delivered by PDC, then that chance to say as you suggest doesn't arise, unless the crew advise verbally receipt. On the PDC should be advice to report "ready" on delivery frquency.