I think if there was ever a season to have 4 African legs, it’s Season 33. There are plenty of different possible “themes” for legs, such as a desert leg (Namibia, Botswana, Tunisia, Morocco), safari leg (Maasai Mara, Kruger, etc), metropolis leg (Johannesburg, Lagos, Nairobi, Cairo), coastal leg (Cape Town, Mombasa, Alexandria), Island paradise leg (Seychelles, Mauritius, Madagascar, Comoros) as well as plenty of new countries (Rwanda, Angola, São Tomé and Príncipe, Equatorial Guinea, Gabon, Algeria, Cape Verde).
To sum it up, I believe if there is any continent that has lots of potential, it’s Africa.