define([
  "some/class1",
  "some/class2",
  "other/classes"
],fucntion(class1, class2, classes){
return {
  myUtility: function(arg1, arg2) { ..... },
  myOtherUtil: function(arg2, arg2) { .... },
  commonClass2: class2.commonUtil
};

});

/// using commonUtils from the debugger....
require([
  "myNS/commonUtils"
],function(commonUtils) {
   commonUtils.myUtility("omg", "its not a global");
   commonUtils.myOtherUtil("omg, "neither am I");
   commonUtils.commonClass2("omg", "I'm actually part of some/class2!");
});