Better liveblog bylines

Could we make the liveblog bylines better?

Message from Jonathan H:

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I checked with the US who were the ones asking for this, but universally it would be very well liked, and yes as we discussed, ideally it'd be that when a specific post in a live blog has a byline it would have functionality and styling of other bylines

so:
author name
name linking to their profile page
byline picture if available
and free text area to add things like "Europe correspondent" or "in Berlin", or both
and ideally styled not like it currently is but like a byline is
(I think you could leave out the ability to follow that author etc that apps offers on main byline as that would be way too much clutter)

if there's anyway of sneaking this into the migration of live blogs, that would be excellent …
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