Yawn. There have been up to 71 Arctic Transits per year in recent years, compared to none in the centuries before Amundsen. Many of those transits were by ships not strengthened for ice conditions, let alone for breaking ice. In particular compare it to the failed attempts of the "Ice Ramming" supertanker Manhattan to bust through in 1968 and 1969. Both times it had to be rescued by Escorting Ice Breakers and turned South to the Amundesn NW passage, which is to narrow and shallow for a fully loaded Supertanker to risk. The Manhattan carried a symbolic barrel of oil on both trips.

In any case the McClure Parry passage will be a side show when the Pole is open ice free 3 months a year by 2050. The Route along Europe and Asia is already ice. The remaining Multi Year ice tends to accumulate in the Canadian Arctic Islands, so it may be the last arctic region to see the end of multi year ice.

http://nsidc.org/data/seaice_index/images/daily_images/N_daily_concentration_hires.png