[Newshound47]

I suspect in time World News will end up with the national bulletins airing sometimes on it.

I highly doubt this. It has only happened in very rare and unusual circumstances where taking the domestic bulletin made editorial and practical sense. As I've said before, the merger is not going so deep as to affect network bulletins - arguably they'll be more independent from the news channels than they've been since 2006.

Wait until the headlines about presenters working for only a brief amount onscreen each day start. Totally unjustified because of how much work happens when not live on air but it could well spook the BBC into making more cuts.