OP if your concern is using up your Miles, then check what if any fees you may be hit with as a Plat vs a 1K. Most of the time Im changing my flights like water (I know the 21 day free thing but often Im not doing it within that period) also the extra Inventory has helped me numerous times score a seat that wasnt available otherwise.

Dont forget an EC-WC-NRT-SIN can at times be had for apx $1100 and be done over a weekend.If you do the immediate turn around 7 hrs later simply use 25k (it was in Jan) and stay at the Crowne Plaza @ SIN walk right in from the arrivals hall. NO PC pts trade, get a hot shower and a few hrs shut eye in a decnt bad to make it thru the return flights

then as mentioned are the GPUs & RPUs

btw how far are you away from xMM if your close to any Level even with the slashing of the benefits its still worth hitting it