So if a 12 round calendar, i would prefer
2 x Winterrally
5 x Gravelrally
5 x Asfaltrally
Winter: could be Arctic rally (fin), and one in either Norway or one of the Baltic countries)
Gravel: Keep the two that are on the calendar, and add, South Swedish, 1 rally in Germany, 1 in east Europe
Asfalt: Take out Canarias and Madeira, keep the rest !