The Shadow
Hero
EDIT:The issue here is that they've already stated their intention of including every class that was a core class in any previous PHB.
True, but I'm still holding out hope that they will come back to their senses.

Assassin is the most egregious example: There is just no way that belongs as a class.
And I don't think my hope is unjustified - they've already talked about making specialist wizards into "advanced themes", so that may scotch the idea of an Illusionist class. (Mind, I think this particular idea is a bad one - but it does show the way their thoughts are going.) I seem to recall one of the DDXP seminars saying that they were open to finding out in playtest if certain classes should become themes.