Knocking off for the evening, but in case anyone else is potentially interested, my mgwBTCD bids (235 of them, from 170-176 NXT each; about 3 BTC) are still in place on the NXT Asset Exchange.  With the additional slide in BTCD/BTC, they represent up to a 7% premium over the prevailing price (about 0.0136 BTC each, based on current NXT and BTCD prices).  Perhaps someone with both a Bittrex account a MGW-enabled NXT wallet wants to grab the arbitrage opportunity.