[Keith]

Agreed, it'd make more sense to just integrate it into the Ten and have a single harder newshour, as per some European broadcasters.

I think I suggested it before, but with the proposals around an hour-long One, it would make sense to just have three newshours, each marketed with a different focus - e.g., live and developing stories at One; the day's national, regional and international news at Six; a deeper look at the top stories (with a lean to international and political news) at Ten. There might be a few issues, but better than a part-time Newsnight, an exclusively talk-based Newsnight or even no Newsnight. Could even bring Victoria Derbyshire across and have her alternate with Clive Myrie.

Not sure if for the One or Ten being an hour, but previously I've suggested along the lines of...
:00 to :30 - National News.
:30 to :45 - Nations & English regions opt-out, with sports update for News Channel.
:45 to :59 - National news / in-depth reports.

For Scotland, Wales and Northern Ireland they could even opt for...
:30 to :59 - Extended nation bulletins.

The latter would be a potential political sweetener, should the BBC ever wish to axe the BBC Scotland channel to save money and minimise the backlash. (Obviously reinstating BBC Two Scotland.)

I suspect any hour long Ten service would most likely be Mon to Thurs. Friday nights seem to still remain popular with chat shows.