I like them, they definitely have a good reason for the picks even if they weren't what I had in mind.  Tom Cruise has shown us time and time again that he can be a very physical and impressive actor, so putting him in the shoes of the merc is a pretty good choice.  Eric Roberts has that smooth, classy feel of The Cowl, definitely another well thought out choice.

I don't have a good choice for the eternal void, either.  I'd actually be curious if we could find a person that everyone collectively agrees to play Umbraxis.