Well after looking at the Weather Man's mocks for The World at One - I think we should abandon the current format and do something like that.
O.K it would be a lot of money, but something a bit different as well.
I also think it should be duel presented from London and America in fact lets throw in Australia as well.
It should be sixty minutes long, but a little different.

Regional Anouncement should be:
"This is BBC One with the latest News, Sport, Weather and Business, from our Reporters and correspondents accross, Yorkshire, Britain and around the World. It's One O'Clock"

BOOM : Headline Sequence comes in, with mixed vision of
VT's and of Presenter. With the Same colour scheme accross all of the sets and the regions - well nearly similar.
I'd suggest the headline sequence would be:
2 Main stories followed by 2 UK National stories presented from London by ford, then of to the regions for 3 regional stories, then two stories from from the States area presented by Jordan (not the model unfortatly) and then off to erm, JaneHill in Sydney for the Asia-pacific headlines.
Then off to a 15 second title sequence played out from the regions, which will say something along the lines of "The World at One Presented by, Anna Ford, (Local presenter), JORDAN and Jane Hill" and features a mixture of local landmarks, worldwide landmarks.
Then off to Anna in London. Where we spend a good 15 minutes, then we go to part one of local news so we go to the regions for 7 minutes long. Then to the stock markets for two minute reports. Then we go to America for ten minutes of news surrounding that side of the pond. Then we re-join London for a recap of all the main headlines by Ford. Then off to Jane Hill for the latest news happening in the southern hemisthere. Then Jane introduces part two of the Local news for five minutes. The regions then introduce a second business update of two minutes. The Business unit then introduces the weather. The national weather team, then introduce the local weather team, then Back to Ford where she's joined for the latest sport by someone from the sports team. A one minute recap of all the regional stories then a two miunute National recap.
Then Neighbours.
I think i've got way to much free time on my hands.