Happy New Year!
We hope it will be better than the last one!
There are some mileage bargains from Luxembourg with Luxair:
All connections with ECO (15000 miles) or Business (25000miles).
It is bookable until the end of February, travel dates are from March to April.
I think 5 destinations are nice, but still with corona hotspots like Barcelona is not the best idea to travel there.
Furthermore you can book Frankfurt to Johannesburg (only Eco 30000 miles) and Warsaw to Chicago (all class, Eco 30k, PEco 40k and B 55k miles)