I really like the Sword-Mage class as well. One of the things I like most about 4e are the powers, and the ease of making your own. The SM would be a fun class to fit you style of play with custom powers.
It's does seem strange that they didn't include a couple of feats to differentiate the dwarfs like that did with elves.
I rather like the content of the player's handbook. To me a guide that is supposed to insert a character into a pre-made world should be mostly fluff.