I haven't tried the steel on top, but yeah that would super easy to do and probably brown up the cheese/toppings a bit more. It would basically be the same as the one kettle pizza sells. I'll give it shot.
Here's the dough recipe I used:
2 cups bread flour (11 ounces), plus extra for dusting work surface
1 teaspoon instant yeast
1 teaspoon table salt
1 tablespoon olive oil , plus additional oil for brushing dough and greasing hands
1 cup water (8 ounces), warm (about 110 degrees)
Very very simple to make and you can easily modify to make it more complex. Add the yeast to the warm water, let it get foamy. Add the dry stuff to mixer bowl with the dough hook. Start running it and add the oil then yeast/water. Let it go for 5 minute or so, quick knead, then put in an oiled boil, cover with saran wrap and let it rise for a few hours. Split the ball in half and make two 12" pies.