We all know that since opening, the food scene at Santa Monica Place has had its share of troubles.  The much-anticipated Market now sits mostly empty and largely untouched, as do a number of other restaurant spaces, even as the wildly popular Cheesecake Factory continues to be a big draw.  Into this chaos, one plucky new eatery is making a courageous bid.  Mall staple Great Khan’s Mongolian Grill is now open in the food court.  We wish them luck.