That's really good! Would be great if we could choose the calendar and pick from a selection of circuits that included some historic F1 tracks like Zandvoort or Estoril too.
Exactly what I would love to see as well, with presets as well, like "Default" (17 races) and "Extended" (21 races), both based on real F1, then "Custom" where it's whatever. I'm going to keep finishing RBR in hopes it's A.) Good enough, and B.) They accept "donated" images and if they will, I'll try for more.