If Canon would make Canon RF 16-28mm F2, then Canon RF 35mm F1.2 will be the import part of:
Canon RF 85mm F1.2
Canon RF 35mm F1.2
Canon RF 16-28mm F2
Before Canon RF 16-28mm F2 is available, these are good enough:
Canon RF 85mm F1.2
Canon RF 15-35mm F2.8