I'm a fan of grilling bacon for the burgers. Plus right before putting the burger on, I put on a chunk of hickory or mesquite.
Toasting the buns is a must too.
I stepped it up to grinding boneless short ribs (chuck does'nt come close) I get at costco ....better fat content and beefier flavor.Kosher salt,oilve oil and grill them over very hot coals on a oiled rack. Contrary to what you may have heard it's okay to give the burgers a light "smash" to get the fat to drip onto the fire creating that flame grilled flavor since you'd be grilling a fattier meat. Buying store ground burger is a fail ...If you don't have a meat grinder get one.
Great idea!Post pictures of your next cook to give us an idea about what the starting and ending product is. Maybe someone can spot something that might trigger a suggestion.