A handy addition for touring is a small tarp to cover the front luggage rack (aka rooftop tub). It's useful to block out hot sun, and also protects quite nicely in driving rain — unlike the "Wasser-Stopper" rainfly that encloses the entire front "vestibule," this simple design allows for cross ventilation. It also provides a degree of "visual privacy" when your front tent window is zipped open.
I've made a few of these (very inexpensively) out of commercial awning material (reflective silver on one side, black on the other, reversible). Just fold over an inch of extra material and sew a "hem" all the way around, then add a grommet to each corner. Two modified "s-hooks" clip into the diagonal braces at the top, and short bungee cords hook into the end of the rain gutters to keep the tarp taught (while still allowing front doors to open).