Have a hook or such so that messages can be delivered to the users via a standard single way.

We had a quick discussion about this in MediaWiki-General:

<p858snake|_> also LQT really should activate the big orange new message bar when someone leaves a message on your talk page
<Ashlee> p858snake|_: Maybe. The orange bar is kind of horrible.
<^d> It would be nice if we had some standard way to inject things up there.
<Ashlee> Up where?
<p858snake|_> without it, if the person doesn't know to look for it they probably miss the fact that they have new messages\
<Ashlee> The orange bar also still goes below the <h1>, which is just wrong.
<^d> Ashlee: Where new messages, central notice, etc.
<^d> Should all go above the <h1>
<Ashlee> All the notices already do.
<Ashlee> There's an old bug about the new messages bar. 12XXX something.
<^d> Reinventing the wheel is nasty.
<Ashlee> https://bugzilla.wikimedia.org/show_bug.cgi?id=12681
<^d> Would be nice if there was just something like $wgOut->addPreHeaderContent() or something.

Version: unspecified
Severity: enhancement
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=12681