Yeah, never use too much sugar in a rub or mop... and sauce after IF they need it! I had a slab of BB's consumed last night nekkid. Yum!
here's my general mop: 1/2 cup Cider vinegar, 1/2 cup bourbon, couple dashes of soy 1 teaspoon Kosher salt. To that you can add alot of other stuff, spices, a couple tablespoons brown sugar, etc. Rosemary, savory for beef... run with it!