One routing option worth considering if you want to maximise miles and have plenty of time is to route via ORD. The flight arrives early (midday) allowing for additional connections via DTW/MSP/MEM depending on your final destination.
Routing AMS-ORD-DTW rather than direct AMS-DTW will net an extra 700 odd status miles/1500 award miles.
Most KL fares allow routing via any east coast/central USA gateway.