I just finished hot-rodding my Large BGE with all the bells and whistles. First, it has one of the new fireboxes that is pre-cut from top to bottom to allow for the expansion and contraction that frequently cracks the old-sty;le ceramic fireboxes (this is my third replacement in 12 years). Next, I've replaced the old felt gasket with Nomex high-temperature gasket material from high-que. Also from high-que, I've replaced the broken cast iron fire grate with a stainless fire grid that doesn't get clogged up. I replaced the old side vent door with one of the new models that has a screen door slider underneath the solid metal slider. Stuck to the outside of the door is a Pro Comm 4 Wireless Control from The Barbecue Guru. For the internals I have a regular and cast iron grate along with a large plate setter. To that I have added a complete Woo3 set for grilling, baking, and cooking in the wok. There's a nine LED work light on a goose neck.
Did I miss anything?