i don't think their was enough of a reaction to Xavier's death.
There wasn't supposed to be. It was a cliffhanger ending to the arc. The next arc deals with the aftermath and all it encompasses.
New X-Men in 616 is doing an awesome job of this aspect. At one point it was all action little story. But now that they've killed off a bunch of characters---they've spent the past 2 issues dealing with the reprecussions of that.