I've noticed that crop up a few times now -Traffic Service is downgraded due to traffic density (when you'd expect to need it more than ever!). This never happened under RIS......Is this a new HSE thing?
Basic is ok when crossing a big expanse of water, or when pasing close to a zone or when you need to know stuff about Danger areas and the like. I have had traffic info passed on a Basic, though most of the time not.