or get KVS platinum and search for Z class (business award class) on CSA. This way you can fly DL to any place in EU where CSA flies too, e.g FRA or MUC or DUS, etc Then you can do MCO-ATL/JFK/MEM/MSP/DTW-XXX in Europe-PRG.
I have done TYS-DTW-FRA-PRG-ILZ on award tickets a few times in Y. It was not too difficultt to get them when searching with KVS.