Double it: Or triple it, even. All I know is that it's always the first thing to go. It's super easy to tackle the waves of hunger as guests arrive; just refill the empty pan with more dip, bake, top, and send it out. The crowd cheers.
Freeze the bacon: I find it MUCH easier to freeze bacon first, before cutting and frying. Then I don't have to futz with greasy bacon sliding around on a cutting board as I wield a large, sharp (also greasy) knife. If you already have bacon in the freezer (thank you, Costco!) you're one step ahead of the game. Just chop it up while still frozen and cook.
Make it spicy: Sure, add a few dashes of your favorite hot sauce to the cheese and mayo mixture before baking.
Make ahead: Mix up the dip a day or two before, store in the refrigerator, then spread it out in the prepared pans when you're ready to bake.