'Taters are good choice. I use the back grate as well as the basket on my Genesis to direct cook 'taters and squash while cooking something else indirect. Works out really well with the front and back burners on, the middle off, and the basket in the front position. Also use them to keep chicken pieces and brats/sausages warm while cooking more. They're great for toasting buns too.
You could use it to cook a L&S Brisket but you'd still need to be cooking indirect, so the main grill would likely be just as suitable.