Ellie Crisell? Hardcore??
I think the BBC may consider Ellie Crisell
somewhat
hardcore, given she presents part of BBC1's evening news schedule and makes occasional appearances presenting the main news on the News Channel. She even presented the main BBC1 lunchtime news once as part of a NC simulcast IIRC.
The reason I believe this is because you wouldn't catch the likes of Tasmin Lucia-Khan, Sam Naz or Matt Cooke presenting the main news on the News Channel would you (even though they all presented Entertainment 24), all of whom have presented 60 Seconds at some point or another in the past. They did make an exception with James Dagwell, although you never saw him on the main news (on the NC) during the day.
I dont think their choice of presenters has anything to do with them being 'hardcore'. Its not a particularly big job, and i'm pretty sure the only reason Kate Silverton did it was because they didnt have anything else for her to do after Sophie Raworth came back from her maternity leave.
There are a lot of very talented people working in the BBC Regions who could run rings around the people in London, i wouldn't be so quick to dismiss them as not 'hardcore', as you put it, just because you never saw them present a BBC One Bulletin or on BBC News.
Tasmin Lucia Khan did the BBC Interactive for years and then went on to Daybreak's news segment, and Matt Cooke worked for Midlands Today before moving to 60s, and is now at BBC London News. So I would say both of them have enough 'Hardcore' news experience to present 60s of news. More to the point, anybody could present that 90s teabreak, and they don't even need to be a journalist. Bring Moira Back, she's a million times more credible than the Squeaky-Mouse-Lady, who I'm pretty sure was only ever on the NC when they couldn't get anybody else. You don't need journalistic credibility if you've got gravitas, and Moira's got gravitas to spare.