re: the regional intros, presumably need to do it at least 20 mins beforehand as well if it's recorded, to allow time to add clocks etc. and play it out again (unless the regions just have to grab it live and edit themselves) then still allow a bit of time for rehearsals (does much ever get rehearsed in breakfast TV these days?)
I would assume all regions will have a GMB clock that they will slap over the handover and their bulletin. There's bound to be at least one that doesn't get the position or font quite right.
The only way I can see it working, if indeed they are actually going to do this, is that they pre-record them days or weeks before having changed into the clothes they will be presenting in the next day. This has the potential to go wrong the moment one of the presenters calls in sick.
No-one (presenter or production) is going to want to be doing "Now the news in X region with Y" fourteen times in a row at 3-4am when they should be concentrating on the content of the actual programme they are there to make.
The other thing, whenever they're recorded, is if there's a window on the set, like Daybreak had, it'll be easy to spot the pre-records because of the different light levels.
It's a lot to get right and a lot to go wrong. I stand by my original comment: ridiculous.