I have no clue why del Bosque has a Soldado allergy. Soldado's scored 41 in his last 66 appearances for Valencia. Make him the focal point of attack with Xavi and Iniesta behind him and Pedro supporting him on the right flank and you'll have decent enough attacking power. If Villa won't be fit quick enough, this should be the favoured Spain lineup:
Silva----------Soldado----------Pedro
-------------------------------------
-----Iniesta-------------Xavi---------
--------------Busquets---------------
-------------------------------------
Alba------Pique-----Puyol------Ramos
There you go. Looks like champions' material to me. But knowing del Bosque, he'll completely fuck up, including players like Xabi Alonso and Raul back into the team that Aragones got rid of long ago to turn Spain into champions.