Getting Chris Tarrant for breakfast would be huge, but I can't really see him wanting or needing to do it - or them being able to afford him.
So far it looks like the budget for big names only runs to weekly shows, which is probably why the weekend schedule is coming together more quickly than the weekday one.
That's not necessarily a bad thing. Some decent new talent on weekdays, with weekly shows (plus the 10 at 10) from a few big names is a perfectly good formula that works for many other stations.
A few issues with automated back-timing going into the 12 o'clock news. We got the first few bars of Sade, which were swiftly cut off by the news jingle.
The news was quite nicely localised (top story was the London MPs getting jobs in the new shadow cabinet). But I'm hoping they'll cover London-specific stories (eg transport disruption) rather than just localise national stories. Hard to judge from 60-second bulletins on a very busy national news day, though.