Interesting sale with Kenya Airways, KLM and Air France from Johannesburg to points across Germany and Europe. Flights are via Nairobi and then Amsterdam or Paris to the final destination. These book into Z class which only earns 100% MQMs / RDMs and 20% MQDs with Delta, still these will credit nicely. Flying Blue members would obtain 120 XPs (15 for JNB-NBO , 30 for NBO-AMS and another 15 for AMS with these flights.
Johannesburg to Dusseldorf from €1,111
Kenya Airways flights are mostly operated by the Boeing 787 with 6 across lie-flat seats.
Here is a Trip Report on KLM Boeing 747 and Intra-Europe Business Class. They also have an excellent lounge in Amsterdam.
KLM Boeing 747-400 Business Class