I guess in the lights of the well hailed OnRez Viewer Lindenlab was tempted to build a renovated version of the viewer on their own. The result is the Dazzle first look viewer.
Dazzle looks quite blue, when you use it, but aside that it's still the old Lindenlab viewer, all the same menus and such, nothing new in it. Yet.
That's the difference with the OnRez Viewer. When it became public available, it had some innovations in it like the in-built webbrowser, the renovated search and others. OnRez itself was innovative, Dazzle on its own is just a new skin for the client, nothing more.
But what the client really needs is a rearrangement and rethinking of some menus, interfaces and much more, which hasn't happened in Dazzle - yet. So in that point Dazzle is simple disappointing at the moment.